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A mourner kisses the coffin of Police General Farag during his funeral service at Al-Rashdan Mosque in Nasr City

A mourner kisses the coffin of Police General Nabil Farag, who was killed during Thursday's security operation in Kerdasa, during his funeral service at Al-Rashdan Mosque in Cairo's Nasr City district September 20, 2013. Egyptian security forces were hunting for supporters of deposed President Mohamed Mursi of the Muslim Brotherhood on Friday after retaking control of a town near Cairo in a crackdown on Islamists. On Thursday, army and police forces stormed Kerdasa where Islamist sympathies run deep and hostility to the authorities has grown since the army overthrew and imprisoned Mursi on July 3. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: POLITICS CIVIL UNREST MILITARY OBITUARY)

Egypt police storm area near Cairo

Egyptian security forces backed by helicopters raided a town on the outskirts of Cairo known to be an Islamist stronghold on Thursday, exchanging fire with suspected militants who killed a senior police officer. (AP)