The Kahan Commission, formally known as the Commission of Inquiry into the Events at the Refugee Camps in Beirut, was established by the Israeli government on 28 September 1982, to investigate the Sabra and Shatila massacre. The Kahan Commission was chaired by the president of the Supreme Court, Yitzhak Kahan. Its other two members were Supreme Court Judge Aharon Barak, and Major general (res.) Yona Efrat. The Commission was to make recommendations on Israeli involvement in the massacre through an investigation of:[A]ll the facts and factors connected with the atrocity carried out by a unit of the Lebanese Forces against the civilian population in the Shatilla and Sabra camps.