Violence in Cairo (archive)
Violence in Cairo (archive)Reuters

At least one person was killed Sunday in a bomb explosion on a Cairo bridge, just hours after Egyptian forces gunned down a top Islamist leader in an apartment near the bridge. It is not clear yet if there is a connection between the two incidents.

The bomb that exploded on the bridge to the upscale Zamalek neighborhood killed a man who was identified as a police officer. At least three bystanders, two police officers and one civilian, were injured in the blast. No group has yet taken responsibility for the explosion.

It was the second straight day of bombings in Cairo. On Saturday, two bombs exploded near police stations in a residential district. No one was injured in those explosions, officials said.

On Saturday night, Egyptian forces shot and killed Hamam Mohamed Attia of the Ajnad Misr terror group, one of several Islamist groups that have based themselves in northern Sinai and have caused no end of trouble for Egyptian forces, setting off many bombs and engaging in numerous shooting incidents that have killed hundreds of Egyptian police and soldiers in recent years.

On March 28, Ajnad Misr set off bombs near Cairo University, wounding four police officers and two civilians.