At least three policemen were killed and several others injured when unknown militants opened fire at a police vehicle here in Hangu on Thursday.

According to details, DPO Hangu, unidentified miscreants opened firing at police mobile van while it was on routine patrol in Kotli, a sub-urban area of Hangu at about 9:30am.

As a result of firing three cops were killed on the spot while several others sustained injuries. The attackers managed to escape from the scene after firing incident.

The bodies and injured were shifted to District Headquarter hospital (DHQ) Hangu.

Heavy contingent of police reached the scene after the incident cordoning off the area and launched search operation but no arrest could be made.