Omar Suleiman, the vice-president, announced in a televised address that the president was "waiving" his office, and had handed over authority to the Supreme Council of the Armed Forces.
Suleiman's short statement was received with a roar of approval and by celebratory chanting and flag-waving from a crowd of hundreds of thousands in Cairo's Tahrir Square, as well by pro-democracy campaigners who attended protests across the country on Friday.
