Multiple rockets fired at Kabul airport intercepted by US missile defense system .

The official said initial reports did not indicate any US. casualties, but that information could change.

Multiple rockets were fired at Kabul's international airport but were intercepted by a missile defense system, a US official told Reuters citing initial information.

The official, speaking on the condition of anonymity, said as many as 5 rockets were fired, though it was not clear if all were brought down by the defense system.