A US drone attack killed at least five militants in north-west Pakistan's South Waziristan tribal district on Sunday. A military official said, the target was a house used by militants. An intelligence official who confirmed the attack put the toll at six dead and three wounded. The unmanned aircraft fired three missiles at the house in Kaza Panga village, 15 kilometres west of Wana, the main town in lawless South Waziristan. The attack was the first since a US gunman shot and killed two Pakistanis in the eastern city of Lahore on January 27, triggering a diplomatic row between Pakistan and the United States.