It was the 39th attack targeting US interests since October last year in Iraq, a country where the US and its sworn enemy Iran vie for influence.

The two rockets did not cause any damage, the Iraqi army added in a statement.

As with previous attacks, the rocket fire went unclaimed.

The US has routinely blamed pro-Iran factions for targeting its interests in Iraq in recent months.

Iran's most prominent general, Qasem Soleimani, was killed in a US drone strike near Baghdad airport in January, bringing Tehran and Washington to the brink of direct confrontation.