Supporters of ousted Egyptian president Mohammed Morsi announced new demonstrations on Sunday as the country grew increasingly polarised and the death toll in four days of violence topped 800.
A day earlier, the police stormed a Cairo mosque where Morsi loyalists had holed up, after trading fire with gunmen inside its minaret.
The call for fresh demonstrations looked set to test the so-called Anti-Coup Alliance of Morsi loyalists, which failed to hold mass rallies on Saturday, but has insisted that protests will continue.
The group announced two major rallies in east and south Cairo following afternoon prayers at 1400 GMT.
Ahead of the rallies, some semblance of normality returned to the streets of the capital, which is under a night-time curfew and has been unusually quiet in recent days.
Traffic was almost at normal levels, and banks and shops opened their doors cautiously after four days of violence since Wednesday, when police cleared two pro-Morsi protest camps.
At least 578 people died across the country in clashes following the operation, and the government said another 173 people were killed between Friday and Saturday, bringing the toll in just four days to more than 750.