Local administration officials said the foreigners were of ethnic Turkmen origin and were driving near Mohammad Khel in the Dande Darpakhel area. The area is located about 30km west of the tribal regions main town of Miranshah.
Local tribesmen told the BBC the first missiles struck the car carrying the Turkmen and other militants, destroying it completely. Moments later, two more missiles struck a house said to be used by Taliban. Three militants were killed in that attack and several others were injured. The US drones regularly hit hideouts of militants in the tribal region.