A drone dropped explosives near U.S. forces stationed at Erbil airport in northern Iraq late on Wednesday, Kurdish officials said, with no immediate reports of casualties.
It was the first known attack carried out by an unmanned aerial drone against U.S. forces in Erbil, amid a steady stream of rocket attacks on bases hosting U.S. forces and the embassy in Baghdad that Washington blames on Iran-backed militias.
The Interior Ministry of the autonomous Kurdistan regional government, based in Erbil, said in a statement the drone was carrying TNT which it used to target the U.S. forces. It said no one was hurt in the attack.
A group that Western and some Iraqi officials say is aligned with Iran praised the attack, but did not explicitly claim it.
A barrage of rockets hit the same U.S.-led military base in the Erbil Airport vicinity in February, killing a non-American contractor working for the military.