A fire erupted at the entrance of Egypt's presidential palace Friday night as protesters hurled Molotov cocktails and rocks in a battle with security forces, who responded with tear gas and water cannon.

Egypt has been rocked by violence since last week's two-year anniversary of its 2011 revolution. Protesters have been angry over the slow pace of change and recent edicts by President Mohammed Morsy, who imposed a 30-day curfew on areas engulfed by violence.