Question: Where is the terrorist group that has been attributed to the 2014 Jos bombings based?

Context paragraphs:
National Socialist Underground: The National Socialist Underground or NSU (German: "Nationalsozialistischer Untergrund" ) was a far-right German terrorist group which was uncovered in November 2011.  So far, the following crimes have been attributed to the NSU: the National Socialist Underground murders, a series of murders of nine immigrants (eight Turks and one Greek) between 9 September 2000 and 6 April 2006; the murder of a policewoman and attempted murder of her colleague; the 2001 and 2004 Cologne bombings; and a series of 14 bank robberies.  The Attorney General of Germany called the NSU a "right-wing extremist group whose purpose was to kill foreigners, and citizens of foreign origin".

2012 Pune bombings: The 2012 Pune bombings was a series of four coordinated low-intensity bombing attacks that occurred on 1 August 2012 across Pune, the ninth-largest metropolis in India.  As of October 2012, Indian Mujahideen, a terrorist group based in India, is suspected to be behind the attacks.

Khalid al-Juhani: Khalid Mohammad bin Muslim Al-Arawi Al-Juhani (Arabic: وقع خالد بن محمد مسلم الجهني‎ ‎ , also known as Mu'awiyah al-Madani) was a Saudi member of al-Qaeda who appeared cradling a rifle, in a 2002 videotape in which he promised a "martyrdom" attack.  In 2003, the Saudi government identified al-Juhani as one of twelve dead perpetrators of the Riyadh compound bombings based on DNA found at the scene.

Boko Haram: Boko Haram, referred to by themselves as al-Wilāya al-Islāmiyya Gharb Afrīqiyyah (Arabic: الولاية الإسلامية غرب أفريقيا‎ ‎ , (Islamic State West Africa Province, "ISWAP") and Jamā'at Ahl as-Sunnah lid-Da'wah wa'l-Jihād (Arabic: جماعة أهل السنة للدعوة والجهاد‎ ‎ , "Group of the People of Sunnah for Preaching and Jihad"), is an Islamic extremist terrorist group based in northeastern Nigeria, also active in Chad, Niger and northern Cameroon.  The group was led by Abubakar Shekau until August 2016, when he was succeeded by Abu Musab al-Barnawi.  The group had alleged links to al-Qaeda, but in March 2015, it announced its allegiance to the Islamic State of Iraq and the Levant (ISIL).  Since the current insurgency started in 2009, it has killed tens of thousands and displaced 2.3 million from their homes and was ranked as the world's deadliest terror group by the Global Terrorism Index in 2015.

Zarate Willka Armed Forces of Liberation: Zarate Willka Armed Forces of Liberation (Fuerzas Armadas de Liberación Zárate Willca) was a Bolivian guerrilla terrorist group which was organized about 1985 and surfaced with a series of bombings, assassinations, and attempted assassinations in La Paz, Bolivia, during 1988 and 1989.  They claimed responsibility for an assassination attempt on United States Secretary of State George P. Shultz in August 1988, the bombing of the Bolivian Parliament in December 1988, another bombing which caused a local blackout, the bombing of a LDS Church meetinghouse, the slaying of two American Mormon missionaries (Elders Jeffrey Brent Ball and Todd Ray Wilson) on May 24, 1989, and the bombing of the US Embassy in a failed attempt to assassinate US Ambassador Robert S. Gelbard on December 20, 1989.  By 1991, most members of the group had been apprehended, tried, convicted and imprisoned, and the organization was effectively disbanded.

2005 Bangladesh series bombings: On 17 August 2005, around 500 bomb explosions occurred at 300 locations in 63 out of the 64 districts of Bangladesh.  The bombs exploded within a half-hour period starting from 11:30 am.  A terrorist organization, Jama'atul Mujahideen Bangladesh (JMB) claimed responsibility for the bombings.  The group, led by Shaykh Abdur Rahman and Siddiqur Rahman (also known as Bangla Bhai), is alleged to be affiliated with Al Qaeda, although this has not been proven.  Another terrorist group, named Harkat-ul-Jihad al-Islami, was associated with JMB in executing the co-ordinated attack.  Following the bombings, both groups were banned by the Government of Bangladesh.

2014 Jos bombings: On 20 May 2014, two bombs exploded in Jos, Plateau State, Nigeria, killing at least 118 people and injuring more than 56 others.  The first bombing occurred in a marketplace, and the second near a bus station.  Though no group or individual has claimed responsibility, the attacks have been attributed to Boko Haram.

Filiberto Ojeda Ríos: Filiberto Ojeda Ríos (April 26, 1933 – September 23, 2005) was the commander-in-chief ("Responsable General") of the Boricua Popular Army ("Ejército Popular Boricua, a.k.a., Los Macheteros").  According to an unsigned article in the "Los Angeles Times", Los Macheteros was “a terrorist group seeking Puerto Rico's independence.”  The group campaigned for, and supported, the independence of Puerto Rico from the United States.  In 2001, FBI Director Louis J. Freeh claimed the group was linked to acts of terrorism, but Ronald Fernandez, scholar of Puerto Rican history, suggests such labeling was an act of political convenience by the United States Government, intended to "shift the blame for any attacks on U.S. policy or personnel from us to them".  Ríos was also a founder of the FALN.  In a 1983 New York Times article, Robert McFadden described the FALN as a Puerto Rican terrorist organization responsible for bombings during the 1970s and early 1980s "in the name of Puerto Rican independence".

Iraultza: Iraultza (Basque for Revolution) was a small Basque militant armed group of leftist tendency.  Seven of the group would die preparing explosive devices.  On June 27, 1986, a bomb claimed by Iraultza mangled a young worker called José Miguel Moros Peña in Portugalete.  The victim would die in Cruces Hospital (Barakaldo) on August 13, 1986.  The group is also known for being described by the United States Government as "probably [having] committed more bombings against American business interests than any other European terrorist group".  Soon after, the group, which had been active for about a decade with small attacks of explosives that never aimed to cause any personal injuries, announced its dissolution.  When the group was operational, it is estimated that it had approximately 20 members.

2005 Delhi bombings: The 29 October 2005 Delhi bombings occurred on 29 October 2005 in Delhi, India, killing 62 people and injuring at least 210 others in three explosions.  The bombings came only two days before the important festival of Diwali, which is celebrated by Hindus, Sikhs, and Jains.  The bombs were triggered in two markets in central and south Delhi and in a bus in the Govindpuri area in the south of the city.  Indian investigators believe the Kashmir separatist/ Islamic terrorist group Lashkar-e-Taiba was behind the attacks.

Supporting paragraphs: 2014 Jos bombings Boko Haram
Answer: northeastern Nigeria