08/07/2011 11:30
New protesters gather in Cairo square
Activists have called for a million-strong demonstration on Friday in Cairo's Tahrir Square - the epicenter of the 18-day uprising that forced President Hosni Mubarak to resign on 11 February, bbc.co.uk reports.
Riots have erupted in the Egyptian city of Suez, after a court upheld the release on bail of policemen accused of killing 17 people during the uprising.
Anger has been growing in Egypt about the slow pace of trials for Mubarak-era officials and security forces.