A drone attack on a US troop base in eastern Syria on Sunday killed six allied Kurdish fighters, Arab media reported.
It is the first significant attack in Syria or Iraq since the US retaliated against Iran-backed militias over the weekend.
The US-backed Kurdish-led Syrian Democratic Forces said on Monday that the strike targeted the al-Omar training base in Syria’s eastern Deir el-Zour province, where special forces units are training. No US military casualties were reported.
An umbrella group of Iranian-backed Iraqi militias called the Islamic Resistance in Iraq released a video claiming responsibility for the attack and showing them launching a drone from an unspecified location.
The attack came amid tensions in the Middle East amid a war between Israel and Hamas, which was sparked by a Hamas attack in southern Israel on 7 October.
Meanwhile, Britain-based opposition war monitor Syrian Observatory for Human Rights said at least seven SDF fighters were killed in the attack on Sunday and at least 18 others wounded, some in critical condition.
The attack late Sunday came two days after the US military carried out strikes against militant targets linked to Iran in Syria and Iraq. The SDF said it has the right to respond to the attack.