Security officials in Pakistan say least four militants have been killed in the latest American drone attack in the north-western tribal area. Three others were also injured after the pilotless aircraft fired three missiles into a village in Mir Ali, a main town in North Waziristan near the Afghan border. They say the attack destroyed a militants compound. There is no indication of who were killed. Pakistan publicly criticizes drone attacks, saying they violate its sovereignty and fuel more anti-Americanism among the people, but observers widely believe that Pakistan shares intelligence with the U.S. on such strikes.