Mexico hunts for suspects who downed police chopper

Authorities hunted on Wednesday for gang suspects who shot down a helicopter carrying police in western Mexico, killing four aboard in a clash highlighting the government's struggle to quell violence in the region. The suspects apparently used a high-powered, .50-caliber Barrett rifle to bring down the helicopter in Michoacan state on Tuesday, killing the pilot and three officers, said National Security Commissioner Renato Sales. "It was indeed shot down," Sales told Radio Formula.