MIRANSHAH (AFP) - A US drone strike in North Waziristan on Tuesday killed four militants, destroying their vehicle, local security officials said. The strike took place in Spalga village, 15 kilometres south of Miranshah, the main town of the North Waziristan tribal district, near the Afghan border. It was a US drone strike, which targeted a militants vehicle, killing four rebels, a senior local security official told AFP. Another security official confirmed the strike and said the drone fired two missiles. He said the nationalities of those killed in the strike were not immediately known. More than 260 people have been killed in 51 strikes since September 3. The United States does not as a rule confirm drone attacks, but its military and the Central Intelligence Agency operating in Afghanistan are the only forces that deploy the aircraft in the region. The US strikes are deeply unpopular among Pakistanis, who see military action on Pakistani soil as a breach of national sovereignty and say some attacks have killed innocent civilians.