An Egyptian man has been killed during clashes between protestors - mainly Muslim Brotherhood supporters - and security forces on Friday, the latest street fights in Cairo's Matariya district.

It was not clear whether the deceased was a protester or a passerby. 

The man was injured with birdshot and died due to his wounds while being transferred to hospital, Al-Ahram Arabic news website reported.

The low-income district of Matariya has become in recent months a place for frequent street fights between protestors who are mostly reported to be Brotherhood supporters, and police trying to disperse their demonstrations.

Out of 23 people killed nationwide on the fourth anniversary of 2011 revolution, 12 people were killed in Matariya.

Also on Friday, two policemen were injured in clashes with pro-Morsi protesters in the southern city of Beni Suef.

Supporters and loyalists of the Muslim Brotherhood and the ousted Islamist leader Mohamed Morsi have protested for over a year and a half against his toppling, with their demonstrations frequently leading to injuries and loss of life.