Three protesters have been killed in Upper Egypt’s Assiut, chief of security in the city General Abou El-Qassem Abou El-Deif has said in a press statement.

The three people were part of an anti-Morsi protest of thousands which was attacked by unknown assailants as they were marching near the Freedom and Justice Party’s headquarters in the Upper Egyptian governorate.

According to Ahram Arabic, one of the slain, Abanob Atef, was killed after being shot in the head by gunmen on a motorcycle.

At least eight were injured in the attack, including a police officer.

Earlier, one person was killed and about 40 injured when clashes broke out between supporters and opponents of Egyptian President Mohamed Morsi in Beni Sueif province, south of Cairo.

Both incidents took place outside the offices of the Freedom and Justice Party, the political arm of Morsi's Muslim Brotherhood.