evidence: A NATO helicopter crashed in southern Afghanistan on Thursday killing 11 people on board including seven US troops. The cause of the crash is still being investigated but Taliban insurgents later claimed to have shot the helicopter down. [...] "Nobody survived this," Ahmadi told The Associated Press by phone. The helicopter was shot down in Kandahar’s Shah Wali Kot district, which lies in the northern part of the province, said Ahmad Jawed Faisal, a spokesman for the provincial government said. He declined to give further details. [...] In August last year, insurgents shot down a Chinook helicopter, killing 30 American troops, mostly elite Navy SEALs, in Afghanistan’s central Wardak province.