Another consequence of the Israeli invasion was the establishment in southern Lebanon of the United Nations Interim Force in Lebanon, whose mission was to separate the various combatants. Haddad's militia collaborated with Israel and received the bulk of its arms, equipment, supplies and ordnance from Israel. There are eyewitness accounts that support the claim that Saad Haddad's troops were involved in the massacres of Sabra and Shatila in 1982. In the massacre an estimated 763 - 3,500 civilians were killed. In 1984, Haddad died of cancer. His successor as the head of the SLA was general Antoine Lahad.