Three militants and a policeman were killed in a pre-dawn gunfight in Pakistan's northwestern city of Peshawar on Monday, police said.
More than 4,200 people have been killed across Pakistan in attacks blamed on Taliban and other Islamist extremist networks, concentrated in the northwest, since government troops stormed a radical mosque in Islamabad in 2007.
Monday's clashes took place in the wealthy suburb of Hayatabad when a group of five militants attacked a police patrol with small machine guns and Kalashnikovs, police said.
"Three militants were killed during the exchange of fire. We also lost one of our policemen," Shafiullah Khan, a senior police officer, said.
Two militants managed to flee the scene, Khan added.
Khan said that police recovered five grenades, two Kalashnikovs, two small machine guns and explosives from the scene.
Mohammad Ijaz Khan, another senior police official, confirmed the incident and casualties.