Clashes erupted in Tahrir Square on Sunday night between supporters and opponents of the ongoing sit-in being held there, with the two sides throwing stones at each other.
Early reports suggested that tents belonging to protesters and martyrs' families in the center of the square were attacked and set on fire.
The tents were set up in the past few days as part of an ongoing sit-in, following clashes on Tuesday and Wednesday between Central Security Forces and the familes of those killed in the recent uprising.
The familes had been protesting against the slow pace of justice in prosecuting senior figures in the former regime and police officers accused of killing protesers.
