REUTERS

U.S. Defense Secretary Ash Carter declined to disclose details of the operation, saying only that it was to support Iraqi forces positioning ahead of an operation to retake the city of Mosul from insurgents, as reported by Reuters.

Read alsoReuters: Syrian government, U.S.-backed fighters advance against ISA U.S. official, speaking on condition of anonymity, said two helicopters flew the mission but the strike was carried out by a single Apache firing at a vehicle on the ground.