At least three militants and a policeman were killed in a clash near Karnal Sher Khan Interchange on Peshawar-Islamabad Motorway on Saturday.
A security official said that the clash occurred when a police team stopped three persons riding a motorcycle. The motorcyclists first threw a hand grenade at the police and then started firing, he said.
As a result, one policeman identified as Abdul Nasir was killed on the spot, the official said, adding that all three bike riders were killed in retaliation. The driver of the police van also received bullet wounds. He was taken to a hospital in Akora.
The official said that an identity card issued by a local seminary had been found from the possession of one dead militant. The police also claimed to have seized two hand grenades along with sophisticated weapons.
While investigations are in progress, officials believe that the militants were going for a terrorist attack.
Elsewhere, a constable of the community police was gunned down by unidentified persons at Mathra near Peshawar on Saturday morning.
About a week ago, a suicide bomber attempted to hit Khyber Pakhtunkhwa (KP) Chief Minister Amir Haider Khan Hoti in Mardan. On Monday, two suicide bombers attacked the Khyber House in Peshawar, killing eight including the assistant political agent.