A Syria monitoring group says an attack by Islamic State (IS) militants near a refugee camp in northeastern Syria killed at least 38 people.
The Britain-based Syrian Observatory for Human Rights said more than 30 people also were wounded in the May 2 attack, which targeted a checkpoint at Rajm al-Salibi, the location of a refugee camp near the border between Syria and Iraq.
The predawn attack was in territory controlled by the U.S.-backed Syrian Democratic Forces (SDF).
Monitors say IS fighters sneaked into the village of Rajm al-Salibi, located along a front line that separates the Kurdish-controlled Hasakeh Province and IS-held areas further south.
Some militants reportedly blew themselves up at the Kurdish checkpoint while others attacked sleeping civilians in a temporary camp sheltering hundreds of displaced people who've fled IS-controlled territory.
The SDF, a coalition of Kurdish and Arab militias, has seized large swaths of northern Syria from IS during the past year, and is now waging a campaign to drive the extremist group from its de facto capital of Raqqa, Syria.