Two American service members were killed during a rocket attack in northern Iraq late Wednesday, according to U.S. officials.
Additionally, one coalition member was killed in the attack, and 12 others were wounded, said Navy Capt. Bill Urban, adding that the incident is under investigation.
The attack came from an improvised truck launcher that fired off 30 Katyusha rockets, 18 of which landed on Camp Taji, a base just north of Baghdad that houses U.S. and coalition forces, according to a U.S. official, speaking on background to discuss a sensitive topic. The U.S. service members who were killed were one soldier and one airman, the official said.
The attack brings the number of U.S. service members killed in Iraq to four in four days. Two elite Marine Raiders died during a battle to take an Islamic State stronghold on March 8.
Officials did not say what group was responsible for the Wednesday attack, but an Iranian-backed Shiite militia group is likely. Kataib Hezbollah was responsible for a rocket attack late last year on a military base in Kirkuk that killed a U.S. contractor, prompting a U.S. airstrike that killed Iranian Gen. Qassem Soleimani.
In testimony before House lawmakers on Tuesday, Gen. Frank McKenzie, commander of U.S. Central Command, warned against future Iranian and Iranian-sponsored attacks against U.S. and allied forces in the region.