A military helicopter has crashed in an incident that early reports suggest may involve a sudden mechanical failure. Witnesses say the aircraft went down only minutes after appearing to experience trouble in mid-air.
Images circulating online show a large transport helicopter flying at low altitude, followed by photos of wreckage scattered across a barren landscape. A black ribbon graphic has accompanied some of the images, signaling fears of casualties. However, officials have not yet confirmed the number of injuries or fatalities.
