Responsibility for the two attacks was later claimed by the Abu Nidal Organization ( ANO ) in retaliation for Operation Wooden Leg , the Israeli bombing of PLO headquarters in Tunis on 1 October 1985 . Libya was accused , by the US , of funding the terrorists who carried out the attacks ; although they denied the charges , they did praise the assaults . According to published reports , sources close to Abu Nidal said Libyan intelligence supplied the weapons and the ANO 's head of the Intelligence Directorate 's Committee for Special Missions , Dr. Ghassan al-Ali , organized the attacks . Libya denied these charges as well , notwithstanding that it claimed they were " heroic operations carried out by the sons of the martyrs of Sabra and Shatila . " Italian secret services blamed Syria and Iran
Sabra and Shatila
Sabra and Shatila massacre
1985 Rome and Vienna airport attacks