Cairo remains tense after clashes left at least 24 people dead and up to 200 injured in the worst violence in the Egyptian capital since the country's revolution in February.<br /><br />An overnight curfew was lifted on Monday but dozens of people have been arrested, according to state media reported, and a heavy security presence remained on the streets near Tahrir Square.<br /><br />Al Jazeera's Omar al Saleh reports.
