A rocket exploded at the U.S. Embassy in Kabul in the early hours of September 11.
No injuries were reported an hour after the blast, according to the AP.
Inside the embassy, employees heard the following message over the loudspeaker: "An explosion caused by a rocket has occurred on compound."
There was no official comment from U.S. or Afghan officials.
The blast comes on the 18th anniversary of the 9/11 terrorist attacks on the United States...