Atef Bseiso (August 23, 1948 – June 8, 1992) (Arabic:عاطف بسيسو) was the PLO head of intelligence. He was killed in Paris in 1992. The PLO and Israeli author Aaron Klein blamed the Israeli secret service Mossad for the killing, while others suggested it was the Abu Nidal Organization. Israeli officials only commented on Bseiso's involvement in the Munich massacre.