"Earlier today, the US base in Qasrak, located on our territory, was attacked by four drones launched from Iraqi territory," Sipan Hamo said on X, adding that "the drones were shot down without casualties".

"We hold Iraq responsible and call upon it to prevent the recurrence of attacks that threaten our stability."

The attack came a day after Syria's army said it repelled another drone attack from Iraq aimed at al-Tanf, a base in the southeast which used to house US forces.

Earlier this week, the Syrian military said another base in the northeast was also targeted by a missile attack from Iraq, with an Iraqi official saying a local armed group was behind it.

Iraq has arrested four people in connection with that attack.

Iraq has been pulled into the war since it was sparked by US and Israeli strikes against Iran on February 28, with the conflict engulfing much of the Middle East.

Pro-Tehran Iraqi groups have claimed responsibility for attacks on US interests in Iraq and across the region, while strikes have also targeted these groups.

In recent months, American forces have withdrawn from the al-Tanf base, as well as Shadadi in the northeastern province of Hasakeh, and had begun withdrawing from the Qasrak base, also located in Hasakeh.