Damascus, July 31 (RHC)-- Islamic State terrorists in Syria have reportedly killed at least 18 people in an attack on a northern town which was recently liberated by Kurdish forces.

The so-called Syrian Observatory for Human Rights (SOHR) announced in a Thursday statement that the Islamist militants slipped into the town of Sarrin in the Aleppo Province and attacked a building used by Kurds as a base.

According to the Britain-based group, a militant blew himself up with the rest then opening fire. The conflict left 10 Kurdish fighters and eight ISIL terrorists dead, including the bomber.

On Sunday, Kurdish People's Protection Units (YPG) forces took full control of Sarrin, which lies northeast of the provincial capital of Aleppo and is situated three kilometers (1.8 miles) east of the Euphrates River, following days of heavy clashes with ISIL terrorists.

The town lies along Syria's M4 highway, which the Takfiris use a key supply route to transport militants and armaments between Aleppo Province and the group's major stronghold in the Syrian northeastern city of Raqqa.

The capture of Sarrin cut off ISIL's principal access route to parts of Aleppo Province, where the Takfiri terrorists are engaged in fierce battles against Kurdish forces, rival Takfiri militants as well as Syrian government troops.