A strike on a base in western Iraq killed seven security personnel, the defense ministry said Wednesday, a day after an attack on the same base targeted the Popular Mobilization Forces.
"This resulted in the death of seven of our heroic fighters and the injury of 13 others," the ministry said of the strike in Anbar province, saying it specifically targeted the base's military healthcare clinic.
Rescue operations were ongoing, it added.
The base hosts Iraqi police, soldiers from the regular army and PMF, a security official told AFP.
It was hit by a deadly strike on Tuesday that the former paramilitaries blamed on the United States.
Iraq said late on Tuesday it would summon the US charge d'affaires and the Iranian ambassador after deadly strikes blamed on their countries, as Iraqi authorities granted the targeted groups the "right to respond".
Iraq has been pulled into the war sparked by US and Israeli strikes on Iran on February 28, and which has since engulfed much of the region.
Iraq has long been a proxy battleground for the United States and Iran, and has struggled to balance diplomatic ties with both countries.
Since the war began, pro-Iran armed groups have claimed responsibility for attacks on US interests in Iraq and across the region, while strikes have also targeted these groups, including state-linked positions.
In the statement from the prime minister's office, however, Iraq granted former paramilitaries within the official armed forces the right to "respond to military attacks" by drones and aircraft that targeted their headquarters.