Iran Press/ Middle East: U.S. Army Colonel Wayne Marotto, spokesman for the U.S.-led coalition, tweeted that the rockets landed on the base and its perimeter.
Iraqi army officials said the pace of recent attacks against U.S. bases with rockets and explosive-laden drones is unprecedented.
Iraqi military sources said a rocket launcher fixed on the back of a mini-truck was used in Wednesday's attack and was found on nearby farmland.
On Tuesday, a drone attacked Erbil airport in northern Iraq, targeting a U.S. base on the airport grounds, Kurdish security sources said.
In response to the attack on Ain al-Assad base, the US forces have reportedly targeted the "al-Baghdadi" area of Anbar, from where the missiles were allegedly fired.
The US artillery unit also targeted a mosque in the town of Heet (Hit) indiscriminately in Al-Anbar.
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Read More:
Roadside bomb targets US convoy in southern Iraq
Rocket attack targets US military base in Erbil, Iraq
Drone shot down over US embassy in Baghdad
