A Turkish soldier was martyred when an explosive device went off during a security sweep in northern Syria, Turkish defense ministry said Monday.

In a statement, the ministry said the soldier was martyred in northern Syria, where Turkey launched anti-terror Operation Peace Spring on Oct. 9 to eliminate terrorists from the area in order to secure its border, 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 for 120 hours to allow the withdrawal of YPG/PKK terrorists from the planned safe zone.

Read more: Turkish soldier martyred in northern Syria