A US drone strike killed six suspected militants on Saturday in North Waziristan, local security officials said. Four missiles hit a house in Dashgah village near Datta Khel town, some 45 kilometres (28 miles) west of Miranshah, the main town in North Waziristan tribal district, the officials said. "Two US drones fired four missiles and destroyed the house. Six Suspected militants were killed in this attack," a security official based in Peshawar told AFP on condition of anonymity. Two intelligence officials in Miranshah also confirmed the attack and the death toll. "All of them were militants attached to the Haqqani group," one intelligence official said. The second intelligence official told AFP that initial reports suggested the dead were Uzbek militants from Afghanistan. Pakistani officials have reported that at least 21 US drone attacks have killed around 120 people in September, the highest monthly tally of attacks. A covert US drone war in Pakistan has killed around 1,140 people in about 140 strikes since August 2008. The attacks fuel anti-American sentiment in the conservative Muslim country.