Mass protests are continuing into the night, as part of a standoff between Egyptian protesters and the military government.
Egypt's ruling generals have said they are prepared to hold a referendum on immediately transferring power to civilian authority if people demand it and have called for presidential election before July 2012.
Tens of thousands of protesters in Tahrir Square rejected the military concessions.
In Alexandria, protesters confronting police faced a heavy barrage of tear gas. The street clashes continued late into the evening.
Al Jazeera's Gerald Tan reports.