The first president of Egypt was Mohamed Naguib, one of the leaders of the Free Officers Movement who led the Egyptian Revolution of 1952, and who took office on 18 June 1953, the day on which Egypt was declared a Republic. Since then the office has been held by five further people: Gamal Abdel Nasser, Anwar Sadat, Hosni Mubarak, Mohamed Morsi and Abdel Fattah el-Sisi. In addition, Sufi Abu Taleb acted as president between Sadat's assassination and the election of his successor, and Adly Mansour acted as president after Morsi's overthrow in the 2013 coup d'état.