PESHAWAR, Pakistan — A pair of US drone strikes in northwest Pakistan near the Afghan border killed 13 people Thursday, including a senior militant commander who had a truce with the Pakistani military, intelligence officials and residents said. Five Pakistani security officials said the commander, Maulvi Nazir, was reportedly among nine people killed in a missile strike on a house in the village of Angoor Adda in the South Waziristan tribal region early Thursday. The officials spoke on condition of anonymity because they were not authorized to brief the media. Nazir's killing could prove to be a contentious issue between Washington and Islamabad, which is believed to have struck a nonaggression pact with Nazir ahead of the Pakistani military's 2009 operation against militants in South Waziristan. Militants under Nazir's command focused their attacks on American forces in neighboring Afghanistan, earning the militant leader the enmity of the US. But Pakistan's military viewed Nazir and militant chiefs like him as key to keeping the peace internally because they do not attack Pakistani targets. Residents in both Angoor Adda and Wana, the biggest town in South Waziristan, said they heard announcements on mosque loudspeakers announcing Nazir's death. One resident, Ajaz Khan, told The Associated Press by telephone that 5,000 to 10,000 people attended the funeral of Nazir and six other people in held in Angoor Adda. Reports of individual deaths are difficult to independently verify. It is difficult for Pakistani and foreign journalists to travel to the remote areas where many of these strikes occur, and the US rarely comments on its secretive drone program. The second drone strike took place near Mir Ali, the main town of the North Waziristan tribal region. One missile hit a vehicle near the town, followed by another missile when people rushed to the vehicle to help people in the car. The officials say four people were killed in the strike, although the identities of the dead were not immediately known. Nazir was attacked by a suicide bomber in November as he was arriving at an office he used to meet with locals and hear their complaints. Nazir and more than a dozen other people were wounded in the attack, and seven people were killed. No group claimed responsibility for the attack, but suspicion immediately fell on rival militants who have been jockeying with Nazir for power in South Waziristan. Nazir outraged many Pakistanis in June when he announced that he would not allow any polio vaccinations in territory under his control until the US stops drone attacks in the region. Pakistan is one of three countries where polio is still endemic. Nine workers helping in anti-polio vaccination campaigns were killed last month by militant gunmen. —AP