A joint Russian-Turkish vehicle patrol in northwest Syria’s Idlib Province was hit with a massive improvised explosive device (IED) on Tuesday morning at 0850 hours local time. Three Russian troops and several Turks were injured in the blast. Both Russian and Turkish vehicles were damaged in the attack. 

Although the Russians and Turks support opposing sides in the ongoing decade-long Syrian civil war, they conduct joint patrols along the strategically important M4 highway. The patrols are part of a ceasefire agreement in an attempt to deescalate the violence in the region.

The director of the U.K.-based Syrian Observatory for Human Rights (SOHR), Rami Abdel Rahman reported that “numerous explosions were heard as the patrol passed in a village northeast of the town of Ariha.”

However, a video posted on Twitter appears to show only one large explosion.