2014 Iguala mass kidnapping
On September 26, 2014, forty-three male students from the Ayotzinapa Rural Teachers' College were forcibly abducted and then disappeared in Iguala, Guerrero, Mexico. They were allegedly taken into custody by local police officers from Iguala and Cocula in collusion with organized crime. The mass kidnapping has caused continued international protests and social unrest, leading to the resignation of Guerrero Governor Ángel Aguirre Rivero in the face of statewide protests on October 23, 2014. According to official reports, the students annually commandeered several buses to travel to Mexico City to commemorate the anniversary of the 1968  Tlatelolco massacre; police attempted to intercept several of the buses by using roadblocks and firing weapons. Details remain unclear on what happened during and after the roadblock, but the government investigation concluded that 43 of the students were taken into custody and were handed over to the local Guerreros Unidos ("United Warriors") drug cartel and probably killed. This official version from the Mexican government is disputed. The Inter-American Commission on Human Rights (IACHR) assembled a panel of experts who conducted a six-month investigation in 2015. They stated that the government's claim was "scientifically impossible" that the students  were killed in a garbage dump because they were mistaken for members of a drug gang. Mexican authorities also claimed that José Luis Abarca Velázquez, the mayor of Iguala and a member of the Party of the Democratic Revolution (PRD), masterminded the abduction with his wife, María de los Ángeles Pineda Villa, as they wanted to prevent them from disrupting campaign events held in the city, although neither of them were put on trial for the students' disappearance. Both fled after the incident. They were arrested about a month later in Mexico City for the murder of activist Arturo Hernández  Cardona. Iguala's police chief, Felipe Flores Velásquez, was also arrested in Iguala on October 21, 2016. On November 7, 2014, Mexican Attorney General Jesús Murillo Karam gave a press conference in which he announced that several plastic bags had been found by a river in Cocula containing human remains, possibly those of the missing students. At least 80 suspects have been arrested in the case, 44 of whom were police officers. Two students have been confirmed dead after their remains were identified by the Austria-based University of Innsbruck. Other sources allege a government cover-up, stating that the  27th Infantry Battalion of the Mexican Army was directly involved in the kidnapping and murder. This is the case made by investigative journalist Anabel Hernández, claiming that two of the buses were secretly transporting heroin, without the students' knowledge. She stated that a drug lord ordered the battalion's colonel to intercept the drugs; the students, witnesses of the attack, were killed as collateral damage. There are also reports linking federal forces to the case, some stating that military personnel in the area deliberately refrained from helping the students in distress. On December 3, 2018, newly elected President Andrés Manuel  López Obrador announced the creation of a truth commission, to lead new investigations into the events. In June 2020, José Ángel Casarrubias Salgado, a.k.a. "El Mochomo", leader of the United Warriors cartel, was arrested on suspicion of being responsible for the abductions and murders. Three months later, the government announced it was seeking the arrest and extradition of former official Tomas Zeron, one of the authors of the official "historical truth," which has been widely rejected by families of the students. Background. The Ayotzinapa Rural Teachers' College in Tixtla, Guerrero, Mexico, founded in 1926, is an all-male school that  has historically been associated with student activism. Guerrero teachers, including the students from Ayotzinapa, are known for their "militant and radical protests that often involve hijacking buses and delivery trucks." The appropriation of the vehicles was, according to the students, routine and temporary. Most of the buses are usually returned after the protests conclude. This tactic has largely been tolerated by law enforcement even though it is inconvenient for other users of public transport. Although federal agents tend not to actively confront students when they "borrow" buses, the practice puts students and teachers at odds with local officials. Other protest  tactics used by the students include throwing rocks at police officers, blocking roads, and stealing property. Students claim those tactics are the only way to get attention and earn funds from the government. Local authorities in Guerrero tend to be wary of student protests because of suspected ties with leftist guerrillas or rival political groups. In 1995, the Guerrero state police killed seventeen farmers and injured twenty-one others when they were carrying out a protest. The massacre led to the creation of the Popular Revolutionary Army (Spanish: "Ejército Popular Revolucionario"), which is believed by some state officials to retain  some political influence in Guerrero. Students claim to have no ties with such groups, and that the only thing they have in common with them is socialist ideology. In addition, in places like Guerrero, where the bus companies are assumed to pay protection money, the student campaigns are seen as threatening to organized crime. In December 2011, two students from the Raúl Isidro Burgos Rural Teachers College of Ayotzinapa were gunned down and killed by the Guerrero state police during a rally on the Cuernavaca to Acapulco federal highway. In February 2013, President Enrique Peña Nieto published an education reform  bill in the Official Journal of the Federation in agreement with the pact signed by the three main political parties, Institutional Revolutionary Party (PRI), National Action Party (PAN) and Party of the Democratic Revolution (PRD), named Pact for Mexico. This bill aims to make public education more effective, with higher standards, higher achievement, and higher focus on the needs of students, as well as introducing a competitive process for the hiring, promotion, recognition, and tenure of teachers, principals, and administrators and declared that all previous appointments that did not conform to the procedures were null. Some teachers oppose these reforms  because they refuse to be tested and graded on their students' performance with universally standard exams that do not take in account the socio-economic differences between urban and under-equipped rural schools, which affect student performance. In May 2013, teachers belonging to the "Coordinadora Nacional de Trabajadores de la Educación" (CNTE) union started rallies and strikes across Mexico, staying in the Zócalo of Mexico City in a sit-in protest against the Reform and the bill of secondary laws. Students of the Rural Teachers College of Ayotzinapa joined the protest against Education Reform. In September 2013, the police retook  the Zócalo square using water cannons and tear gas. Business organizations of Baja California, Estado de Mexico, and Chiapas demanded decisive action against teachers on strike, as well as politicians from the PRD and PAN, and academics. In October 2013, three teachers protesting against the Education Reform suffered head injuries and a broken arm after being pelted with stones. The attack was blamed on the inhabitants of the Tepito Neighborhood, although teachers blamed the Federal Government. In January 2014, the Governor of the State of Mexico, Eruviel Ávila Villegas, sent a bill to the local Congress proposing to sanction those  teachers who were actively protesting and not attending their jobs with fines and jail time. In August 2014, journalist Carlos Loret de Mola claimed to have heard a person in a meeting with President Peña Nieto saying "we're going to beat the hell out of those CNTE guys" (""Les vamos a partir la madre a los de la CNTE""). Clash with authorities. On September 26, 2014, at approximately 6:00 p.m. (CST), more than 100 students from the Ayotzinapa Rural Teachers' College in Tixtla, Guerrero, travelled to Iguala, Guerrero, to commandeer buses for an upcoming march in Mexico City. The  students had previously attempted to make their way to Chilpancingo, but state and federal authorities blocked the routes that led to the capital. In Iguala, their plan was to interrupt the annual DIF conference of María de los Ángeles Pineda Villa, local President of the organization and the wife of the Iguala mayor. The purpose of the conference and after-party was to celebrate her public works, and to promote her campaign as the next mayor of Iguala. The student-teachers also had plans to solicit transportation costs to Mexico City for the anniversary march of the 1968 student massacre  in Tlatelolco. However, on their way there, the students were intercepted by the Iguala municipal police force at around 9:30 p.m., reportedly on orders of the mayor. The details of what followed during the students' clash with the police vary. According to police reports, the police chased the students because they had hijacked three buses and attempted to drive them off to carry out the protests and then return to their college. Members of the student union, however, stated that they had been protesting and were hitchhiking when they clashed with the police. As the buses sped away and the  chase ensued, the police opened fire on the vehicles. Two students were killed in one of the buses, while some fled into the surrounding hills. Roughly three hours later, escaped students returned to the scene to speak with reporters. In a related incident, unidentified gunmen fired at a bus carrying players from a local soccer team, which they may have mistaken for one of the buses that picked up the student protestors. Bullets struck the bus and hit two taxis. The bus driver, a football player, and a woman inside one of the taxis were killed. The next morning, the  authorities discovered the corpse of a student, Julio César Mondragón, who had attempted to run away during the gunfire. His eyes had been gouged out and the skin of his face flayed to a bare skull. In total, 6 people were killed and 25 wounded. Kidnapping. After the shootings, eyewitnesses said that students were rounded up and forced into police vehicles. Once in custody, the students were taken to the police station in Iguala and then handed over to the police in Cocula. Cocula deputy police chief César Nava González then ordered his subordinates to transport the students to a  rural community known as Pueblo Viejo. At some point, while still alive, the students were handed over by the police to members of the Guerreros Unidos ("United Warriors"), a criminal organization in Guerrero (splintered from the Beltran Leyva cartel). One of the trucks used to transport the students was owned by Gildardo López Astudillo (alias "El Cabo Gil"), a high-ranking leader of the gang. "El Gil" then called Sidronio Casarrubias Salgado, the top leader of Guerreros Unidos, and told him that the people he had in custody posed a threat to the gang's control of the area. Guerreros  Unidos likely believed that some of the students were members of a rival gang known as Los Rojos. With that information, Casarrubias allowed his subordinates to kill the students. Investigators believe that a gang member known by his alias "El Chucky" or "El Choky" took part in the killings. He was suspected of collaborating with Francisco Salgado Valladares, one of Iguala's security chiefs, in kidnapping the students. According to investigators, the students were taken to a dumpster in the outskirts of Cocula. After reaching the site it is likely that 15 students had died of suffocation and the other  students were then killed by Patricio Reyes Landa, Jonathan Osorio Gómez and Agustín García Reyes. These three suspects then dumped the bodies in a pit, and some other suspects known only by their aliases burned the corpses with diesel, gasoline, tires, wood and plastic. They also destroyed the students' clothing in order to erase all possible evidence. The fire most likely lasted from midnight until 2:00 or 3:00 p.m.. The gang assigned guards throughout the day to make sure that the fire was kept alive. When the fire had gone down, the suspects threw dirt in to cool the pit . They then placed the remains in eight plastic bags and dumped them in the San Juan river in Cocula, reportedly on orders from a man known only as "El Terco". "El Gil" then sent a text message to Casarrubias Salgado confirming the completion of the task. "We turned them into dust and threw their remains in the water. They [authorities] will never find them", the text read. Initially, 57 students were reported missing; fourteen of them, however, were located after it was found that they had returned to their families or had made it back safely to their college. The  remaining 43 were still unaccounted for. Student activists accused authorities of illegally holding the missing students, but Guerrero authorities said that none of the students were in custody. Believing that the missing students had fled through the hills during the shootings, authorities deployed a helicopter to search for them. The 43 students, however, were never found. The mass disappearance of the 43 students marked arguably the biggest political and public security crisis Mexican President Enrique Peña Nieto had yet faced in his administration (2012–2018). The incident drew worldwide attention and led to protests across Mexico, and international condemnation. The resulting  outrage triggered near-constant protests, particularly in Guerrero and Mexico City. Many of them were peaceful marches headed by the missing students' parents, who come from poor rural families. Other demonstrations turned violent, with protesters attacking government buildings. Unlike other high-profile cases that have occurred during the Mexican Drug War (2006–present), this case resonated particularly strongly because it highlighted the extent of collusion between organized crime and local governments and police agencies. Initial arrests and investigations. On September 28, 2014, members of the Office of the General Prosecutor in Guerrero arrested 22 police officers for their involvement in  the shooting and disappearance of the students. Police chief and Iguala's Director of Public Security, Felipe Flores Velásquez, turned in firearms, police vehicles, time shifts information, and policemen involved in the incident to the Ministry of Public Security. The state government said that the 280 municipal police officers in Iguala had been called in for questioning about the incidents. All but 22 of them were released without charge. State prosecutor Iñaky Blanco Cabrera stated that the 22 officers detained had used excessive or deadly force against the students. The investigations concluded that 16 of the 22 police officers had  used firearms against the students. They were imprisoned at the state penitentiary Social Reintegration Center of Las Cruces in Acapulco, Guerrero. A few days later they were transferred to the Federal Social Readaptation Center No. 4 (also known as "El Rincón"), a maximum-security prison in Tepic, Nayarit, under aggravated murder charges. The Mayor of Iguala, Abarca, claimed in an interview on September 29, 2014, that he had no previous knowledge of the incident, and that he could not have been responsible because he was attending a conference and after-party when the clashes took place. Following this he claimed  to have left to dine with his family at a restaurant. He said he heard about the attack when his personal secretary called him and gave him the details. "After that, I was in constant communication [with the police], giving them orders to not fall for provocations", Abarca said. He said he was not aware of the students that were missing or of the investigation. He also pledged that he would not resign and agreed to cooperate if he was investigated. That day, Abarca met with the former Party of the Democratic Revolution (PRD) President Jesús Zambrano Grijalva, who requested  him to formally petition a resignation. Moreover, one account stated that Abarca's wife María de los Ángeles Pineda Villa was last seen at Guerrero's Tourist Promotion Body (Protur) in Acapulco that day in a private meeting with State Governor Ángel Aguirre Rivero. Eyewitnesses reportedly saw Pineda "worried" and "in a hurry". On September 30, 2014, Abarca asked for a 30-day leave of absence which was granted by the Iguala city council. His absence came amid pressures from other members of his political party, the PRD, who asked him to resign in order to facilitate investigations. Before the  official session was over at the city council, federal agents arrived asking for Abarca, but he had already left. Federal agents then raided the mayor's house because he had an order of appearance. Abarca was believed to have left Iguala with his wife and children. Investigations concluded that he had left Guerrero but was still in hiding somewhere in Mexico. "We are looking for him in an ongoing investigation. We have people on him," said Tomás Zerón de Lucio, head of the Criminal Investigation Agency. Rumors suggested that he had fled the country. Felipe Flores Velásquez was also issued  an order of appearance. However, Flores was not located. At that time, Abarca still benefited from immunity under Mexican law, which protects elected officials from prosecution unless they commit a serious crime. In Abarca's case, he was protected from prosecution of common crimes, but not from federal charges. On October 18, 2014, it was revealed that Guerreros Unidos (United Warriors) gang leader Sidronio Casarrubias Salgado was arrested by Mexican authorities. United Warriors members were suspected of being involved in the abduction and murder of the 43 students. On June 24, 2020, Salgado's brother and replacement as United Warriors  leader José Ángel Casarrubias Salgado was arrested. By this point in time, it was believed that El Mochomo was in fact responsible for the disappearance of the students and also the one who also ordered their murders. On 26 September 2020, arrest warrants were issued for more police and it was the first time arrest warrants were issued for soldiers as part of this investigation. Eight other cartel members were also arrested. The mayor of Iguala, José Luis Abarca, has been accused of direct participation in the earlier torture and murder of an activist; the mayor's wife, María de  los Ángeles Pineda Villa, is the sister of known members of the Beltrán-Leyva Cartel. The mayor and his wife, and the police chief, fled the area and were declared fugitives. Protesters demanding justice for the victims marched in several cities. Aftermath. A number of theories have been proposed to explain the killing of the students. The students all attended a local teacher training college with a history of left-wing activism and radicalism, but it is not clear that they were targeted for their political beliefs. Some think that they may have angered Guerreros Unidos by refusing to pay  extortion money. Others believe there may be a link between the students' disappearance and a speech given by the wife of Iguala's mayor on the day of the clashes. She was speaking to local dignitaries when the students were protesting in Iguala and some believe they may have been targeted because it was feared they could disrupt the event. A mass grave, initially believed to contain the charred bodies of 28 of the students, was discovered near Iguala on October 5, 2014. They had been tortured and, according to reports, burned alive. Subsequent reports increased the estimate of the  number of bodies found to 34. On October 10, 2014, the United Nations Working Group on Enforced or Involuntary Disappearances; Christof Heyns, Special Rapporteur on extrajudicial, summary or arbitrary executions; and Juan E. Méndez, Special Rapporteur on torture and other cruel, inhuman or degrading treatment or punishment, released a joint statement calling the Iguala attacks a "crucial test" for Mexico's government. "What happened in Guerrero is absolutely reprehensible and unacceptable," the statement says. "It is not tolerable that these kind of events happen, and even less so in a state that respects the rule of law." On October 13 , 2014, protesters ransacked and burned government offices in Chilpancingo, the capital of Guerrero, although the fire was controlled, it destroyed part of the history records of birth, marriages and deaths of Chilpancingo. On October 14, 2014, police announced that forensic tests had shown that none of the 28 bodies from the first mass grave corresponded to the missing students, but on the same day four additional graves, with an unknown number of bodies, were discovered. On October 20, 2014, masked protesters set fire to an office of a state social assistance program, "Guerrero Cumple", in Chilpancingo, burning computers and filing  cabinets. On the next day some 200 teachers set fire to the regional office of the Party of the Democratic Revolution in Chilpancingo which controls the state government. On October 22, 2014, the federal government stated that Abarca had ordered the arrest of the students in order to prevent them from obstructing a municipal event. The PGR described him and his wife as the probable masterminds of the mass kidnapping. The director of the Iguala police force, Felipe Flores, was also mentioned as one of the main perpetrators. The Mexican government discovered that a local cartel paid the police force  US$45,000 monthly to keep them on the cartel payroll. In Mexico City over 50,000 protesters demonstrated in support of the missing students. Joining the protests in Morelia, Michoacán, were members of Mexico's movie industry – actors, directors, writers and producers- who lit 43 candles on the steps of a Morelia theater. In Venezuela, students also demonstrated in support at the Central University of Venezuela. In the U.S. state of Texas, students and professors rallied at the campus of the University of Texas at El Paso. The name of each disappeared student was read out and signatures were gathered for  an open letter of protest to the Mexican consulate. Protests also took place in London, Paris, Vienna and Buenos Aires. On the same day in Iguala, dozens of protesters, many wearing masks, broke away from a peaceful march of thousands of people demanding that the missing students be returned alive, and broke into the city hall, shattered windows, smashed computers and set fire to the building. On October 23, 2014, the Governor of Guerrero, Ángel Aguirre Rivero, asked Congress for a leave of absence in order to step down from office. According to Mexican law, state governors cannot resign  but may ask for a leave of absence; though an uncommon decision in Mexico, Aguirre decided to leave his post, pressured by his party and public opinion. State lawmakers voted to replace Rivero with Rogelio Ortega Martínez, who served until October 2015. On October 27, 2014, the authorities arrested four members of Guerreros Unidos; according to officials, two of them received a large group of people from other gang members in Iguala on the night the mass abduction took place. Their testimonies helped the authorities locate new mass graves in Cocula, Guerrero, about 17 km (10 mi) from Iguala. The  area was cordoned off by the Mexican Army and Navy before the forensic teams arrived to carry out their investigations. On October 29, 2014, a few hours after being appointed as the interim mayor of Iguala, Luis Mazón Alonso asked for a leave of absence. He said in an interview that he had decided to resign because some members of the Iguala city council were self-serving and had no interest in improving the situation. He is the brother of Lázaro Mazón Alonso, the former Secretary of Health in Guerrero, who resigned on October 16, 2014, after the former Governor  Aguirre accused him of being linked to Abarca. Silviano Mendiola Pérez became the interim mayor of Iguala on November 11. On November 9, 2014, there was a demonstration in Mexico City during which the protesters carried handmade banners with the words ""Ya me cansé"" ("I've Had Enough" or "I'm Tired"), in reference to a comment made by Mexico's attorney general, Jesús Murillo Karam, at a press conference on the Iguala kidnapping. Protesters also chanted: ""Fue el Estado"" ("It was the State"). Some masked protesters broke away from the otherwise peaceful demonstration as it drew to a close , tore down the protective metal fences set up around the National Palace in Mexico City's main Zócalo plaza and set fire to its imposing wooden door. Clashes with riot police followed before the square was cleared. On November 20, 2014, the relatives of 43 missing Mexican students arrived in Mexico City after touring the country and led mass protests demanding action from the government to find them. Thousands of people took part in three protest marches in the capital. Demonstrators called for a nationwide strike. Several hundred protesters gathered near the National Palace, small groups of protesters were throwing  bottles and fireworks at the palace and the police tried to push them back using water cannon. Near Mexico City International Airport before the marches began some 200 hooded protesters threw rocks and petrol bombs at police officers who had been trying to disperse them. Protests also took place in other parts of Mexico and abroad. Mexican President Peña Nieto accused some of the protesters of trying to "destabilize" the state. The Union of Towns and Organizations of Guerrero (UPOEG), along with activists, parents of the missing students, and other drug war victims from different parts of Mexico, organized and  led a search in Iguala on November 23 to uncover more bodies buried in the municipality's clandestine mass graves. They uncovered seven bodies in mass graves at a rural community known as La Laguna. The purpose of the search was to locate mass graves for federal authorities to investigate. "We are doing the job authorities are refusing to do", one of the activists said. Locals stated that members of organized crime frequented the area to bury people around there. The following day, the PGR arrived at Iguala to recover the bodies and investigate them. They planned to further their  investigations on the mass graves found by the UPOEG. Those present told federal authorities to not allow local officials to intervene in the case. The UPOEG announced that they would be leading a committee to uncover more mass graves in Guerrero. Bruno Plácido Valerio, the leader of the group, stated that from January 2013 to November 2014, at least 500 bodies were located between Ayutla and Iguala. He believes that there are more bodies buried in mass graves all across the state. On December 3, 2014, Javier Hernández Valencia, the Representative in Mexico of the United Nations High Commissioner for  Human Rights visited the "Raúl Isidro Burgos" Rural Teachers College in Ayotzinapa, and met with the parents of the missing students, other student survivors and activists accompanying their struggle. The resultant public report "Double injustice" is an independent inquiry focused on key aspects of the official investigation under the light of applicable international human rights standards, including the blatant evidence of arbitrary detentions and torture on 51 people indicted in connection to the crime. Although the report explicitly states it does not intend to offer an alternate version of facts nor to identify the perpetrators and their sponsors, it sheds  light on the deliberate actions attributable to the PGR to produce "quick results" and solve the crime, which ultimately tainted the investigation itself. On January 12, 2015, relatives and supporters of the missing students tried to gain access to an army base in Iguala. The protesters demanded to be let in to search for the missing students. They accused the security forces of colluding in their disappearance. They said soldiers had witnessed a clash between the students and local police which immediately preceded their disappearance, and reportedly failed to intervene. On January 26, 2015, after the confession of one of  the men who plotted against the students had been finalized, Mexican officials took it to the media to inform the country that the 43 students had been killed and their remains were burned. On February 13, 2015, a delegation of parents who traveled to Geneva, Switzerland, with support from a coalition of human rights NGOs, attended the public hearing of the United Nations Committee on Enforced Disappearances (CED), a body of independent experts which monitors the implementation of the Convention for the Protection of all Persons against Enforced Disappearance by the States parties, and submitted the case of the killing  and disappearances of their loved ones to the specialized international watchdog panel, further raising international media attention to their plight. On February 27, Attorney General Murillo Karam left his post at the PGR. He was replaced by Arely Gómez González. On May 7, Francisco Salgado Valladares, the deputy police chief of Iguala, was arrested by the Federal Police in Cuernavaca, Morelos. He was wanted for his alleged involvement in intercepting the students on their way to Iguala. According to law enforcement reports, Salgado Valladares had connections with the Guerreros Unidos gang and reportedly received bribes from them to hand out  to other members of the police corporation. At the time of his arrest, he was one of the most-wanted suspects in the case. Arrest of Abarca and Pineda. At around 2:30 a.m. (CST) on November 4, 2014, an elite squadron of the Federal Police arrested former Iguala mayor Abarca and his wife Pineda at a house in the Tenorios neighborhood in Iztapalapa, Mexico City. Neither of them resisted arrest. Abarca confessed that he was tired of hiding and that the pressure was too much for him. His wife, on the other hand, showed her disdain for law enforcement. The  arrest was confirmed through Twitter by the Federal Police spokesperson José Ramón Salinas early that morning. Once in custody, they were taken by law enforcement to the federal installations of SEIDO, Mexico's anti-organized crime investigation agency, for their legal declaration. At the time of their arrest, Abarca and Pineda were among Mexico's most-wanted. In addition to Abarca and Pineda, another person was arrested by the authorities that day in Santa María Aztahuacán, Iztapalapa. Federal agents stated that the individual was Noemí Berumen Rodríguez, who was believed to have aided the couple in their hiding by lending  them her house. She is a friend of the couple's 25-year-old daughter Yazareth Liz Abarca Pineda, who was taken into custody along with her parents. However, Yazareth was only considered an eyewitness and does not face criminal charges. Authorities were able to link Berumen with the Abarcas due to her friendship with Yazareth and her presence on social media. They discovered that Yazareth had a picture with a friend that lived in Iztapalapa, who followed Berumen online. When the Abarcas left Iguala after the mass kidnapping in September 2014, law enforcement began an investigation to locate all  the properties owned by the couple and their families. Abarca had several properties in Guerrero and in other states, but authorities believed that he was hiding in Mexico City or Monterrey, Nuevo León. After ruling out Monterrey as a possible hideout, authorities concentrated on three properties in Iztapalapa where they believed the couple was hiding. Through the couple's real estate businesses, authorities were also able to link Berumen to the family once more and locate her properties in Iztapalapa. In one of the properties, investigators noticed something unusual: they regularly saw a woman (now known to be Berumen) going  in and out of a property that was thought to be abandoned. Authorities then mounted an investigation and surveillance operation on Berumen before finally entering the property and arresting Abarca and Pineda. At 5:10 p.m. on November 5, 2014, Abarca was transferred to the Federal Social Readaptation Center No. 1 (commonly referred to as "Altiplano"), a maximum-security prison in Almoloya de Juárez, State of Mexico. He was imprisoned for his pending homicide charge, organized crime, and forced disappearance charges. A judge ordered for Pineda to remain under federal custody for 40 days in order to gather more evidences against  her. On December 15, her federal custody detention was extended to 20 more days. She was sent to the Federal Social Readaptation Center No. 4 in Nayarit state on January 4, 2015. Berumen was bailed from prison a few days after her arrest. Iguala police chief at the time of the kidnapping, Luis Antonio Dorantes Macías, was sentenced to prison on January 24, 2021, for his involvement in the incident. Attorney General's conference with family. On November 7, 2014, the family members of the missing students had a conference in the military hangar in Chilpancingo National Airport with the  Attorney General Jesús Murillo Karam. In the meeting, authorities confirmed to the families that they had found several bags containing unidentified human remains. According to investigators, three alleged members of the Guerreros Unidos gang, Patricio Reyes Landa (alias "El Pato",) Jonathan Osorio Gómez (alias "El Jona",) and Agustín García Reyes (alias "El Chereje",) directed authorities to the location of the bags alongside the San Juan river in Cocula. Murillo Karam stated that the three suspects admitted to having killed a group of around 40 people in Cocula on September 26, 2014. The suspects stated that once the police handed over  the students to them, they transported them in trucks to a dumping ground just outside town. By the time they got there, 15 students had died from asphyxiation. The remaining students were interrogated and then killed. The suspects dumped the bodies in a huge pit before fueling the corpses with diesel, gasoline, tires, wood and plastic. To destroy all evidence, the suspects also burned the clothing the students had on them. The fire lasted from midnight to around 2:00 and 3:00 p.m. the next day. Once the fire had subsided, the suspects returned to the site and threw dirt and  ashes to cool down the remains. They then filled up eight plastic bags, smashed the bones, and threw them in the river on orders from a Guerreros Unidos member known as "El Terco." At the press conference, Murillo Karam showed a video re-enactment of how the bodies were transported, and several video interrogations of the suspects, and also video of teeth and bones recovered at the site. He said that the remains were badly burned, making DNA identification difficult. In order to properly identify the remains, the federal government turned to a team of internationally renowned forensic specialists from  the University of Innsbruck in Austria for help, though he said there was no definite timeframe for the results. The families of the students, however, did not accept the statements of the Attorney General and continue to believe that their sons are still alive. They said that they will not accept that their children are dead until it is proven scientifically by independent investigators, since they fear that the government is attempting to close the case in order to counter public outrage. Murillo Karam stated that 74 people had been arrested since the case started and another 10 had arrest  warrants. He said that until the situation of the students is confirmed, the case remains open and the government formally considers the students "disappeared." Resignation of the PRD founder. After meeting with the Party of the Democratic Revolution (PRD) president Carlos Navarrete Ruiz and secretary-general Héctor Miguel Bautista López on November 25, 2014, Cuauhtémoc Cárdenas, the party's founder and senior leader, resigned and issued a letter explaining his departure. A three-time presidential candidate, Cárdenas stated that he had old differences with other party leaders in how to tackle the internal problems of the PRD and on how  to help it restore credibility. Days earlier, he had called for all of the national executive committee of the PRD, Navarete and Batista included, to resign for failing to reform the party. According to Cárdenas, the PRD, which governs Guerrero state and the city of Iguala, was on the verge of dissolution following the political crisis caused by the mass disappearance of the 43 students. The alleged mastermind of the abductions, Jose Luis Abarca Velásquez, was a member of the PRD. The incidents in Iguala caused arguably one of the biggest political crisis the PRD and Mexico's political left  had faced since the party's formation in 1989. When Abarca was linked to the disappearances, many top politicians who had supported his campaign as mayor distanced themselves from him. But many of them also pointed fingers at each other, arguing that some members of the PRD were allied to Abarca. Identification of the students. On December 6, 2014, the first of the 43 missing students, Alexander Mora Venancio (aged 19), was confirmed dead by forensic specialists at the University of Innsbruck. Specialists were able to confirm the status of Mora Venancio by comparing his bone fragments with the DNA  samples the laboratory had of his father Ezequiel Mora Chavez and his brothers Omar and Hugo Mora Venancio. The news was first made public by the student committee of the Raúl Isidro Burgos Rural Teachers' College of Ayotzinapa on the school's Facebook page, and the Argentine Forensic Anthropology Team (EAAF) notified the parents of the student on the status of their son. The committee claimed that the human remains of Mora Venancio were among those located in Cocula, Guerrero. Mexican authorities confirmed the reports the following day at a press conference and released a 10-page report from Dr.  Richard Scheithauer, head of the Institute for Legal Medicine at University of Innsbruck, confirming Mora Venancio's status. Attorney General Jesús Murillo Karam stated that at least 80 people had been arrested in the case, and that 44 of them were policemen of Cocula and Iguala. He said that 16 police officers from these two municipalities were still being sought, along with 11 other probable suspects. After the announcement, classmates, family members, and people close to Mora Venancio paid their respects at his home in Tecoanapa, Costa Chica, Guerrero. The state of Guerrero declared a three-day mourning for his  death. In Mexico City, marches led by the students' family members intensified with the confirmation of Mora Venancio's death. "This day of action will continue until we find the remaining 42 alive", the group's spokesperson said in front of thousands of protestors gathered at the Monumento a la Revolución landmark. On September 16, 2015, the remains of Jhosivani Guerrero de la Cruz were identified. The remains of Mora Venancio were also reconfirmed in the tests. In July 2020, it was announced that bone fragments found near where the students disappeared have been tested by Institute of Genetics at  the University of Innsbruck, in Austria, and identified as the remains of Christian Alfonso Rodríguez Telumbre(aged 19). An anonymous call led investigators to a specific spot in Cocula, a town near Iguala, where the remains were found — about half a mile from the garbage dump. Global Action For Ayotzinapa. The massacre sparked protests worldwide. The protests began to take place after the formal arrest of former Iguala mayor Jose Luis Abarca and his wife Maria de Los Angeles on November 4, 2014. Global action has not only been manifested through protests, but also via online support. #YaMeCansé, #FueElestado, #TodosSomosAyotzinapa, and  #AccionGlobalPorAyotzinapa are amongst the most popular hashtags which allow users to express their thoughts via Instagram, Facebook, and Twitter. Relatives of the missing 43 students toured the United States in April 2015 to raise awareness of the events that took place in Iguala. Known as the Caravana 43, the tour was organized in conjunction with a national coalition of social activist groups seeking justice for Ayotzinapa. The tour of 14 parents, students, and advocates was split into three groups that covered eastern, middle, and western regions of the United States, stopping in a total of 43 cities over 19 states  before convening for a march to the United Nations Headquarters in New York City. Caravana 43 claimed no connection to any official political party or national organization. Instead, its organization was completely voluntary with transportation and accommodations for the relatives covered entirely by donations from individuals in host cities. Local groups "committed themselves to support the fundamental goal of providing a platform for the parents in the United States and assumed the organizational and financial responsibility for the Caravan." By creating the opportunity for the relatives to travel throughout the United States, organizers hoped to better inform the American public  and new media about the attacks and disappearances. In each of the host cities, relatives spoke not only of their loss, but also of the systematic violence and impunity committed by the Mexican government and its police. Official statements from the tour affirm "The problem is Mexico has a long history documented by Mexican and foreign human rights organizations, other governments, and international organizations of using torture to extract confessions which are then used to construct narratives to protect criminals, the police, military officers, government officials, and politicians ... Consequently, many people have no faith in the government's account and  have demanded that the investigations continue." Relatives met with students, teachers, and laborers, pleading for the United States to intervene in the crisis. Moreover, the relatives asked elected officials to rethink U.S. foreign policy as it pertains to Mexico, specifically in regards to the Mérida Initiative. Many believe that these funds are being used to suppress the people, rather than fight the drug cartels. Caravana 43 achieved relative success in the United States. After meeting with the groups, several legislators voiced public support for their effort. Cristina Garcia, a California Assembly member stated, "It's a human rights violation that 's been going on and it affects a lot more than just these students... [The state] has the responsibility to affect change with our border country." Crowds were gathered at each stop and thousands of people joined in social media platforms to promote the tour. The project served as a unifying mechanism not only across international borders, but also for Latino communities within the United States. Following the end of Caravana 43 in the U.S., the parents, students, and advocates hope to continue in their search for truth by organizing similar tours across South America and Europe. Nobel Prize Awards  protest. A young Mexican man interrupted Malala Yousafzai's Nobel Peace Prize award ceremony in a protest over the Iguala kidnapping, but was quickly taken away by the awards security personnel. Yousafzai later sympathised, and acknowledged that problems are faced by young people all over the world, saying "there are problems in Mexico, there are problems even in America, even here in Norway, and it is really important that children raise their voices." Allegations of federal police and army involvement. "Proceso" magazine has implicated the involvement of the Mexican Federal Police and Mexican Army in the case in a December  2014 report. Although President Andrés Manuel López Obrador has promised complete transparency in the investigation, "El País" reported on December 17 that since the November 2020 arrest of an army captain, the Mexican army has not cooperated in the investigation. 2015 investigation. In September 2015, the results of a six-month investigation by a panel of experts assembled by the Inter-American Commission on Human Rights became known to the public. The investigation concluded that the government's claim that the students were killed in a garbage dump because they were mistaken for members of a drug gang was "scientifically  impossible" given the setting's conditions. But other experts, however, criticized this investigation for its shortcomings and stated that it was possible for the missing students to have been killed at the dump. The government responded to the report by stating that they would carry out a new investigation and a second opinion from other renowned experts to determine what happened the night the students were probably killed. In July 2017, the international team assembled to investigate the Iguala mass kidnapping publicly complained they thought they were being watched by the Mexican government. They claim that the Mexican government utilized  Pegasus, software developed by NSO Group, to send them messages about funeral homes that contained links which, when clicked, granted the government the ability to surreptitiously listen to the investigators. The Mexican government has repeatedly denied any unauthorized hacking. Witnesses. An eyewitness who was provided with witness protection by the Mexican Human Rights Commission testified in April 2016 about the involvement of the army and a drug leader known as "El Patrón." A from Sputnik news agency says that Roman Catholic priest and human rights activist Alejandro Solalinde said in May 2016 that he had interviewed seven witnesses, six of  whom insisted that the army was involved. Jan Jarab of the Office of the United Nations High Commissioner for Human Rights in Mexico condemned the torture of Carlos Canto and 33 other witnesses after a video was released on June 21, 2019. Bernabé García, a key witness in the case, was given asylum in the United States by an Arizona judge in February 2020. Ezequiel Peña Cerda, area director of the Criminal Investigation Agency (AIC), was charged for torturing suspects in the Ayotzinapa case on March 17, 2020. Pablo Morrugares, a journalist for "PM Noticias" who specialized in drug-related  crime, was working the evening of September 26–27 and reported that he had clear evidence of military involvement in the attack on the students. Morrugares was murdered on August 2, 2020. On September 28, 2020, President Andrés Manuel López Obrador (AMLO) said that he wanted to place all the people who were recently arrested into a witness protection program. "It is also being sought that the detainees can be considered as protected witnesses because there was a pact of silence so that they did not speak and that pact of silence must be broken," he said. General Salvador Cienfuegos Zepeda , former Secretary of National Defense (SEDENA) (2012–2018) was exonerated on charges of ties to drug traffickers on January 14, 2021. Cienfuegos defended the refusal of the armed forces to participate in investigations into human rights violations in this case or in the Tlatlaya massacre in Michoacan in July 2014 wherein 22 civilians were killed by soldiers. Cienfuegos was arrested on drug trafficking charges in Los Angeles, California, on October 16, 2020, The government of Mexico was widely criticized for releasing Cienfuegos. Tomás Zerón, exdirector of the former AIC, seeks asylum in Israel after being accused of hiding evidence and torture  in the Ayotzinapa case. Juan Carlos Flores Ascencio, "La Beba", alleged leader of "Guerreros Unidos" a drug gang implicated in the case, was murdered on January 17, 2021. Two members of "Guerreros Unidos" in Chicago were identified in September 2019 as witnesses in the Ayotzinapa case. "Reforma" reported on January 21, 2021, that "Juan", a presumed drug gang member, alleged soldiers held and interrogated some of the students before turning them over to a drug gang. The witness said that an army captain, who is now facing organized crime charges in the case, held some of the students at a  local army base and interrogated them, before turning them over to the Guerreros Unidos drug gang. The Interior Department confirmed that the testimony was part of the case file and said it would file charges against whoever leaked it. Family members of the victims say they believe leaks about the identities of witnesses are carried out with the intention of protecting the army.