At least three rockets struck the US embassy in the Iraqi capital, Baghdad, on Sunday.
One rocket hit the embassy cafeteria while two others landed a short distance away.
At least three people were injured, security sources told Reuters. This would be the first time in years that staff have been hurt in such attacks.
No group has claimed responsibility, but the US has blamed Iran-backed military factions in Iraq in the past.
Iraqi Prime Minister Adel Abdul Mahdi condemned the attack, stating that the continuation of such acts could “drag Iraq into becoming a battlefield”.
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