Missiles fired from a US drone targeted a car, killing at least four militants in country's lawless tribal badlands on the Afghan border Wednesday, security officials said. The strike took place at Amboor Shaga village, 25 kilometres (15 miles) west of Miranshah, the main town of North Waziristan, one of seven districts in the tribal belt that Washington has branded a global headquarters of Al-Qaeda. "A US drone fired two missiles at a car," a senior Pakistani security official told a foreign news agency on condition of anonymity because of the sensitivity of the information. "Four militants were killed in the missile strike," the official said. Two security officials confirmed the missile strike and death toll.