PESHAWAR (Agencies) - A suspected US missile strike killed at least five people in the Khyber tribal region on Saturday, in what would be one of the first such attacks in the area, intelligence and government officials said. US missiles have regularly pounding Al-Qaeda and Taliban targets along the Afghan border for two years now. The attacks have killed scores of people, most of them identified as militants by Pakistani officials. But they have caused anger in Pakistan, where many people see them as an unacceptable violation of the countrys sovereignty. The suspected strike in Khyber could fan fresh anger because it represented a widening of the covert programme. Officials gave differing death tolls in the strike, which one said involved two missiles hitting a house and two trucks loaded with militants. The death toll ranged from 5 to 15. Such discrepancies are common and are rarely reconciled. The officials spoke on condition of anonymity because they were not authorized to speak to the media. Much of the supplies for US and Nato troops in Afghanistan are transported through the region and the convoys have often been attacked. The US does not officially acknowledge firing the missiles, let alone make public where they have hit. According to The Washington Post, the Associated Press reports on past strikes do not show any in the Khyber region. Almost all of more than 30 missile attacks this year have hit targets in the Waziristan tribal region. Khyber is also believed to be a militant hotspot that has seen several Pakistani military operations over the last year.