Four people were injured on Friday in clashes between supporters and opponents of the Muslim Brotherhood at the High Judicial Council headquarters in Cairo's Ramses Street, head of the Egyptian Ambulance Authority said.
The injuries include cuts and birdshot wounds, head of the authority told ON TV Live channel.
Protesters torched several Muslim Brotherhood buses in Ramses Street.
Armoured police vehicles arrived at the scene of the clashes and fired teargas to disperse the protesters.
Participants in today's Muslim Brotherhood demonstrations removed graffiti previously drawn by opponents of President Mohamed Mursi and the Muslim Brotherhood off the High Judicial Council's building.
Photos taken for Aswat Masriya showed demonstrators removing graffiti for Samira Ibrahim who is a victim of virginity tests conducted by army members and graffiti supporting April 6 Movement.
Supporters and opponents of the Muslim Brotherhood earlier clashed at the High Judicial Council in Cairo's Ramses Street, television footage showed.
The two parties exchanged stones near Abdel Moneim Riad Square and below October 6 Bridge.
Thousands of Islamists had gathered at the High Judicial Council in a demonstration which the Muslim Brotherhood and some Salafi parties had called for.
The demands of the demonstrators included sacking Minister of Justice Ahmed Mekki and trying head of the Judges' Club Ahmed el-Zend and former Chief Prosecutor General Abdel Meguid Mahmoud.