The attack against U.S. forces is the first since early February.
At least five rockets were launched from Iraq's town of Zummar towards a U.S. military base in northeastern Syria on Sunday, two Iraqi security sources told Reuters.
The attack against U.S. forces is the first since early February.
There has been increased tension in the Middle East lately with the war in Gaza and the recent escalation of hostilities between Israel and Iran.
On Friday, Iran’s air defences said it had brought down three small drones over the central city of Isfahan, hours after US broadcasters said Israeli missiles had hit an Iranian site.
The broadcasters quoted senior US officials.
Iran attacked Israel with a barrage of drones and missiles on April 13, which the latter said were mostly destroyed. Iran said the attack was its response to a suspected Israeli attack on its consulate in Syria which killed seven people, including two IRGC senior generals.
On Sunday, Al Jazeera reported that one of at least two air strikes overnight on southern Rafah killed 13 children and two women – all from the same family, according to Gaza hospital records.
Israeli Prime Minister Netanyahu has faced wide international opposition to a plan for a ground invasion of Rafah, where the military says the last remaining brigades of Hamas are located and where the remaining 133 Israeli captives are believed to be held.
The war has killed at least 34,049 Palestinians and wounded another 76,901 since October 7, according to the Gaza Health Ministry. At least two-thirds of casualties have been children and women.