The attack has been described as “fierce,” with one rocket landing near the gates according to the BBC, but reportedly no rocket hit the base itself.

According to a statement by the Iraqi military there were no casualties; The US-led military coalition fighting Islamic State also said no troops were affected in the attack.

“No Coalition troops were affected by this small attack at Taji Base,” coalition military spokesman Colonel Myles Caggins III said in a tweet.

No group has claimed responsibility for the attack.The camp houses American, Australian and New Zealand allied forces, as well as members of the New Iraqi Army and Iraqi National Guard.

On Sunday, four people were wounded after eight Katyusha rockets were fired at Balad air base, which houses US personnel, located about 80 km (50 miles) north of Baghdad, the Iraqi military said in a statement. Military sources identified the wounded as Iraqi soldiers.

That attack came just days after two military bases in Iraq housing US military personnel were hit by missiles in a strike waged by Iran, in retaliation for the killing of IRGC Quds Force commander Qasem Soleimani by the US military. That strike raised tensions in the region, which have been uneasy ever since.