One person was killed and another wounded Thursday morning when a makeshift bomb blew up in a village near Cairo, a security source has told Al-Ahram Arabic news website.
The bomb, which detonated almost an hour after dawn in Kerdasa, on the capital's western outskirts, killed a man who was suspected to have been carrying it, the source said.
One person was also injured in the blast that came almost an hour after two primitive bombs went off minutes apart near two police posts in Cairo's working class district of Imbaba, causing no casualties, according to state news agency MENA.
Hours earlier, another minor explosion took place near a military hospital in Cairo's Abbasiya district, leaving one wounded.
In 2013, Kerdasa was the scene of fierce clashes between security forces and Islamist supporters of deposed president Mohamed Morsi who dominated the village before police raided it to reimpose state control.
Militant attacks, mainly by insurgents based in the Sinai Peninsula, against security forces have been on the rise since the overthrow of Morsi, Egypt's first freely elected president.
Over the past week, Cairo has been hit by a string of small bomb explosions that killed at least four and injured several others almost a month since Abdel-Fattah El-Sisi, the former army chief who led Morsi's ouster amid massive protests, was sworn-in as Egypt's president.
Today marks one year since the day Morsi was removed from office by the army. The Muslim Brotherhood-led alliance, the National Alliance in Support of Legitimacy, has called for protests against El-Sisi.
On the anniversary of the mass protests against Morsi on 30 June, bombs detoned near the Ittihadiya Presidential Palace killing two officers. Responsibility was claimed by a militant group called Ajnad Masr, that had announced the bombs' locations days before.