Turkey and Russia military personnel completed the first joint ground patrol in northern Syria as a part of planned safe zone east of Euphrates River, the Turkish National Defense Ministry said on Friday.

The joint patrol of Turkey and Russia took place in northern Syria at 40 kilometers (25 miles) east of Ras al-Ayn and 30 km (18.6 mi) west of Qamishli city, the ministry said in a statement.

The patrol, which lasted for four hours, was supported by an unmanned aerial vehicle and eight armored vehicles, it said.

Read more: Turkey, Russia conduct 1st joint ground petrol in N.Syria