A former strongman of ousted President Hosni Mubarak’s regime announced his presidential candidacy, shaking up an already heated race that is emerging as a contest between two long-time rivals – former regime officials and Islamists who have surged in influence.

Egyptian doctors said tonight that three people have been killed in a police and army assault to evict protesters at Cairo’s central Tahrir Square.

Doctors say at least three people have been killed in today's violence in the Egyptian capital.