The attack was carried out by men belonging to ISIL's "Tripoli Province", who are believed to have been natives of Libya. The attackers' stated objective was revenge for the death of Abu Anas al-Libi, a Libyan Al-Qaeda operative who was involved in the bombing of two American embassies in 1998. He was captured by American forces inside Libya in 2013, and died in an American hospital on 2 January 2015.