Twin truck bombings by jihadists killed at least 30 Kurdish People's Protection Units (YPG) fighters and security officers on Monday in Syria's northeastern town of Hasakeh, a monitoring group said.
"At least 30 members of the YPG and asayesh were killed when two Islamic State suicide bombers detonated their trucks at the northern entrance to Hasakeh," Syrian Observatory for Human Rights chief Rami Abdel Rahman told AFP.
The IS bombers targeted two YPG and asayesh positions including a training camp in Hasakeh, capital of the Kurdish-majority province of the same name.
Control of the town is split between Kurdish forces and those loyal to Syrian President Bashar al Assad.
Monday's twin bombings came as IS fighters press their assault on the embattled Kurdish town of Kobane on the border with Turkey.
The jihadists have been trying since September 16 to conquer the town, which would complete their control over a lengthy stretch of Syria's border with Turkey.