Question: What group was behind the attack that killed Amitzur Shapira?

Context paragraphs:
Munich massacre: The Munich massacre was an attack during the 1972 Summer Olympics in Munich, West Germany, at which eleven Israeli Olympic team members were taken hostage and eventually killed, along with a German police officer, by the Palestinian terrorist group Black September.

September 2016 Kabul attacks: Explosions in Kabul on September 5, 2016 killed over 41 people and injured 103 others in twin suicide bombings near the Afghan defense ministry.  Hours later, another huge explosion was heard.  The Taliban claimed the first attack and said that their suicide bomber killed 58 people.  Reportedly an army general and one district police chief were killed in the blast.  Attacks lasted overnight with a siege and hostage situation.  At least one person was killed and six injured in another attack on a charity CARE International building in Shāre Naw.  The attack was claimed by the Taliban, with at least 3 of their attackers being killed and 42 hostages being rescued.

Attack (2016 film): Guru Raj (Prakash Raj) the man of the masses, a powerful business man of Charminar Group of Companies who runs his own gang as a mafia don.  He has 3 sons elder one Kaali (Jagapathi Babu), second one Gopi (Vadde Naveen) and the last one is Radha Krishna / Radha (Manchu Manoj).  All his 3 sons are his backbone.  Valli (Surbhi) who loves Radha tries to drag him away from these issues.  Guru Raj was brutally killed by some unknown gangsters while visiting a temple, his family is completely upset this incident and makes them clueless about the motive behind this attack.  Kaali decides to take revenge against the real culprits behind his father’s death.  He starts digging out the possible reasons and motive for this attack and people involved and planned.  Everyone starts going opposite them.  Unfortunately, Kaali is also killed in unusual circumstances.  After these incidents, Radha decides to take revenge on the people behind these attacks and responsible for his father and elder brother’s death.  Finally, he solve the murders & takes revenge.

Amitzur Shapira: Amitzur Shapira (Hebrew: עמיצור שפירא‎ ‎ ; July 9, 1932 – September 6, 1972) was an Israeli sprinter and long jumper in the 1950s and a coach for the Israeli track and field team at the 1972 Summer Olympics in Munich, Germany.  He was murdered by Palestinian terrorists in the Munich massacre.

May 2010 Kabul bombing: The May 2010 Kabul bombing occurred on May 18, 2010, in Kabul, Afghanistan.  Eighteen people including five US soldiers and a Canadian soldier were killed and fifty-two were injured when a NATO convoy was targeted by a Taliban suicide attacker.  It was the deadliest attack against NATO forces in Afghanistan since September 2009 when six Italian soldiers were killed by a suicide bomber.  Two full colonels and two lieutenant colonels were killed in this attack making it the deadliest attack against ranking officers in Afghanistan.  With this attack the total number of Americans killed in Afghanistan crossed one thousand.

2007 Dellys bombing: The 2007 Dellys bombing occurred on September 8, 2007, when at least 30 people were killed and 47 injured in a suicide car bomb attack on an Algerian naval barracks in the town of Dellys, 100 km (62 mi) east of Algiers.  The blast was carried out by two attackers who killed themselves in the attack.  Al Qaeda's north Africa wing (Al-Qaeda Organization in the Islamic Maghreb) said it was behind the suicide attack.

December 2010 Bajaur bombing: On 25 December 2010, at least 47 people were killed and over 100 others injured, after a female suicide bomber detonated her explosives in a large crowd of people displaced by fighting, who were collecting food at a distribution centre of the World Food Programme in the Pakistani town of Khar, which is located within the Bajaur tribal region, of north-western Pakistan.  It was later reported by witnesses, that the bomber dressed in a full-length burka had reportedly thrown a grenade after resisting search, to which then the bomber proceeded to detonate her explosives.  Several police officials confirmed the bomber was a woman, as opposed to the more likely occurrence of a man wearing the burka as a disguise, in order to successfully conduct this suicide attack.  It was also known that those in this crowd were predominantly displaced members of the Salarzai Tribe, which has supported Pakistan Army operations against the Pakistani Taliban within the Bajaur tribal regions.  Those dozens of people injured in this suicide attack were apparently later taken to local hospitals via means of helicopters.  Local Witnesses, including that of a government official at the main government hospital within the region, Dosti Rehman, claimed that he had personally counted some 40 bodies.  However there are concerns that the death toll could very likely rise, as the official stated that several of those injured, as a result of this suicide attack were apparently in a critical condition at the local hospitals.  This particular bombing acts as one of a string of recent suicide attacks, which have occurred with near impunity, predominantly throughout Pakistan's north-western, Khyber Pakhtunkhwa Province, of north-western Pakistan.  No particular militant group has of yet claimed responsibility for this suicide attack, although the Pakistani Taliban are strong suspects.  The Bajaur tribal region has reportedly seen several Pakistan Army military operations in recent years, however such suicide attacks still continue throughout the region with near impunity.  The Pakistani Prime Minister, Yousaf Raza Gillani later condemned this suicide attack, and claimed that such military offensives would continue against the Pakistani Taliban.  This statement will be met with a certain degree of approval in the U.S, as Pakistan has recently been pressured to launch a major ground-offensive in the nearby North Waziristan tribal region, in order to root-out and destroy the last major remaining safe-haven for Radical Islamist and Pakistani Taliban insurgents within the country.  The U.N World Food Programme later suspended its food distribution activities in the Bajaur tribal region, as a security precaution to this suicide attack.  This suicide bombing was strongly condemned by U.S president, Barack Obama.  The Pakistani Taliban later claimed responsibility for this suicide attack.  This suicide bombing was officially declared the first such suicide attack to involve a female in Pakistan.

I Won't Go for More: I Won't Go for More is a song by Belgian recording artist Selah Sue.  It was written by Sue and Birsen Uçar and produced by Robin Hannibal for her second studio album "Reason" (2015), featuring co-production from Itai Shapira and Salva.  Distributed by Warner Music Group, it was released as the album's third single by Because Music on June 15, 2015.

Alone (Selah Sue song): Alone is a song by Belgian recording artist Selah Sue.  It was written by Sue along with Sean Fenton and Robin Hannibal, and produced by the latter for her second studio album "Reason" (2015), featuring co-production from Itai Shapira and Salva.  Distributed by Warner Music Group, it was released by Because Music on October 27, 2014 as the album's lead single.

23 May 2016 Yemen bombings: On 23 May 2016, two suicide bombings, conducted by the Islamic State of Iraq and the Levant, killed at least 45 potential army recruits in Aden, Yemen.  The first attack, which targeted a lineup, killed 20.  The second attack, which occurred inside the base, killed 25.  The Islamic State of Iraq and the Levant claimed responsibility for the attack.  The attack was preceded by the 2016 Yemen Police bombings in the Yemeni city of Mukalla, which killed more than 48 people and injured over 60.

Supporting paragraphs: Amitzur Shapira Munich massacre
Answer: Black September