Bombing on bridge in Egypt capital kills one
The bomb had been placed on the side of the May 15 bridge that runs over the Zamalek neighbourhood
A policeman was killed and three others wounded when a bomb exploded on a bridge leading to the upscale Cairo district of Zamalek on Sunday, security sources said, according to Reuters news agency.
The force of Sunday's explosion left a crater in the ground. The sources gave conflicting reports about whether the bomb was planted in or near a car.
Two of the wounded were also policemen, while the third was a civilian, they said.
Meanwhile, Reuters reported that the leader of an Egyptian Islamist group that has targeted policemen and soldiers in greater Cairo was killed by security forces early on Sunday.
Hamam Mohamed Attia of Ajnad Misr was shot dead during a firefight around 1 a.m. (2300 GMT) at an apartment in Giza, which is part of the Cairo conurbation, a security sources said.
There was no immediate comment from Ajnad Misr, which emerged in January 2014, on the Twitter account it often uses to claim responsibility for attacks.
Egypt faces an insurgency that has killed hundreds of soldiers and police officers since the army removed Islamist President Mohammed Mursi in the summer of 2013 following mass protests against his rule.
Most attacks have taken place in the Sinai Peninsula, a remote but strategic region bordering Gaza, Israel and the Suez Canal, but smaller-scale bombings have become increasingly common in Cairo and other cities.