At least three rockets have struck the US embassy in Baghdad, reports say.
One rocket is said to have hit the embassy cafeteria, with two others landing a short distance away, injuring three people.
No group has claimed responsibility at this stage, though the embassy has seen continued protests in recent months.
Iraqi Prime Minister Adel Abdul Mahdi has condemned the attack, stating that the continuation of such acts could "drag Iraq into becoming a battlefield".
Recent attacks have targeted the embassy or Iraqi military bases where American troops are deployed.
A US official on the House Foreign Affairs Committee tweeted on Sunday that reports of the strike are being monitored.
If reports that the cafeteria was hit are confirmed, it would be the first direct hit on the embassy during the aggression of recent months.
The Green Zone in Baghdad is the center of international presence in the city, with the US calling on Iraq to ensure the safety of diplomatic facilities in the area.
Cover image: US troops watch crowds protesting outside a section of the US Embassy in Baghdad (Picture: US Department of Defense).