The call was made by the National Alliance for Supporting Legitimacy, consisting of 33 Islamic movements including the Muslim Brotherhood. They've asked people to protest after the Friday prayer, but have not mentioned the venues for their rallies.

Egypt has witnessed unprecedented violent clashes since security forces dispersed two major pro-Morsi sit-ins in Cairo a week ago.

Nearly a thousand people have been killed across the country, including about 100 policemen.

The pro-Morsi alliance has not organized marches over the past three days, while authorities have detained several Islamist leaders.

According to latest reports, Egypt’s security forces have arrested Muslim Brotherhood spokesman Ahmed Aref in the capital, Cairo.

Political tensions in Egypt have escalated since Monday, when Muslim Brotherhood leader, Mohammed Badie, was arrested in an early morning raid in Cairo’s Nasr city.

Following his arrest, Muslim Brotherhood named senior member, Mahmoud Ezzat, as the party’s interim leader.

NJF/NJF