A group of militants on Monday attacked two tankers ferrying oil to NATO and allied forces in Afghanistan,injuring three persons in the process in Nowshera district of northwest Pakistan.
About eight militants travelling in two vehicles attacked the tankers when they were parked along the G T Road in Nowshera district,police said.
The attackers fled the scene after firing at the tankers.
Two drivers and a helper were injured in the firing.
They were taken to a hospital in Peshawar.
Militants have targeted tankers and container trucks transporting supplies and fuel to Afghanistan on at least three occasions in the same area in the recent past.
No group claimed responsibility for the attack.