At least 35 people were killed and dozens more injured in a collision between two buses on a highway in Syria on Saturday, according to state media.

The accident occurred on the desert highway that connects the capital, Damascus, with the eastern province of Deir el-Zour. One of the buses involved was operated by the Interior Ministry, and the other was a civilian bus.

Syrian military helicopters were reportedly deployed to the scene to assist in the operation. The cause of the collision was not immediately clear.