A total of four bombs have exploded on the one-year anniversary of the ouster of former Islamist President Mohammed Morsi, and two people have been reported dead.
One man has died following four bombs marking the Muslim Brotherhood's 'Day of Rage', designed to protest the one year anniversary of the ouster of former Islamist president Mohammed Morsi.
An unnamed man - thought to be the culprit behind the planned attack - was killed as he tried to plant a homemade bomb in the village of Kerdasa, Giza.
Meanwhile another blast went off in the Old Cairo district of Abbasiya, near a military hospital, while two others exploded in the suburb of Imbaba. No casualties were reported from either bomb.
The news comes as authorities formed a ring of steel across Cairo, shutting off Tahrir, Rabaa al-Adaweya and Nadha squares in an effort to crack down on opposition protests.
Meanwhile hundreds of extra cops were deployed across the country as part of the massive security measures.
A security official told state news agency MENA that police and army units have sealed off Tahrir Square using armoured vehicles and barricades. Explosives experts searched the area for bombs, the official said.
The operation follows a series of bombs detonated at the presidential palace on Monday, killing two police officers and injuring 13 others.
The bombings were claimed by Ajnad Misr.
UPDATE: A second man has died following the Kerdasa attack.