ALEPPO, Syria

At least two were killed and four injured on Friday in a car bomb attack in the Syrian town of Cobanbey near Turkish border.

The explosion took place in front of a police department building in Cobanbey, the northern Aleppo province, which was liberated from terrorists during Turkey's Operation Euphrates Shield in 2016.

No group has yet claimed responsibility for the attack.

Since 2016, Turkey has conducted three successful operations in northern Syria against the terrorist YPG/PKK and Daesh/ISIS: Operation Euphrates Shield (2016-17), Operation Olive Branch (2018), and Operation Peace Spring.

Operation Peace Spring, launched on Oct. 9, aims to eliminate terrorist YPG/PKK elements from northern Syria east of the Euphrates River in order to secure Turkey’s borders, aid in the safe return of Syrian refugees, and ensure Syria’s territorial integrity.

Ankara and Washington reached a deal on Oct. 17 to pause the operation to allow the withdrawal of YPG/PKK terrorists from the planned safe zone.

On Oct. 22, Ankara and Moscow agreed on a deal under which YPG/PKK terrorists will pull back 30 kilometers (18.6 miles) south of Turkey’s border with Syria within 150 hours, and security forces from Turkey and Russia will mount joint patrols there.

In its more than 30-year terror campaign against Turkey, the PKK -- listed as a terrorist organization by Turkey, the U.S. and the European Union -- has been responsible for the deaths of 40,000 people, including women, children, and infants. The YPG is the Syrian offshoot of the PKK.