Assailant Hurls Small Bomb at Cairo Police Building

An assailant threw a small bomb at a Cairo police building Saturday, police said, as rival demonstrators prepared to commemorate the 2011 uprising and a day after a spate of deadly bombings.

The small "incendiary bomb" lodged on the wall of the police training center and exploded without causing any casualties, a police official said.

The assailants escaped, the official added.

It was the fifth attack in the capital in 24 hours, after four blasts, including a car bombing outside police headquarters, killed six people on Friday.

Police were preparing to deploy heavily across the capital to secure Saturday's commemorations of the anniversary of the January 25, 2011 uprising that ended Hosni Mubarak's three-decade rule.

Islamist supporters of Mubarak's freely elected successor, Mohamed Morsi, ousted by the army in July, have called for rallies in the capital against the military-installed regime.

On Friday, at least 14 people were killed in clashes across Egypt between Islamist protesters and their opponents and police.