Air U.S. flight turns around 2:20 p.m. after takeoff . Air China 's cites `` threatening information '' as the reason for return to Beijing . NEW : State media : Initial warning of the threat came from U.S. authorities . State media also quoted police as saying the initial warning of the threat came from U.S. authorities . The flight has departed again for Beijing , Carrier website says .
Air U.S. flight turns around 2:20 p.m. after takeoff . Air China 's cites `` threatening information '' as the reason for return to Beijing . NEW : State media : Initial warning of the threat came from U.S. authorities . The flight has departed again for Beijing , Carrier website says .