Four police personnel, including a station house officer, were gunned down in the Lachi sub-district of Kohat in Khyber Pakhtunkhawa on Saturday night.

Deputy Superintendent of Police (DSP) Lachi Raza Khan told DawnNews that unknown assailants targeted a police mobile which was on routine petrol.

"The assailants ambushed the mobile, killing four policemen on-board, including SHO Khanullah and additional SHO Tahir Mehmood," said the DSP.

The mobile was targeted at Indus Highway, he said, adding that police personnel have reached the spot and initial investigations have been started.

The police official further said that the area has been cordoned off by police and a search operation is under way.