An Egyptian policeman was killed on Tuesday in an exchange of gunfire with suspected militants near the center of the capital Cairo, state television said.
Two private television stations broadcast what they called footage of the shooting, which Reuters was not immediately able to verify. The channels and two security sources, who spoke on condition of anonymity, said that the gunmen were killed.
"Initial investigations show that the suspects were planning to carry out terrorist acts," said one of the security sources.
Explosives and weapons were found with the suspects, the security source added.