Fighting erupted between Syrian government forces and opposition factions on December 1 near Mount Hermon, to the west of Damascus, according to local activist media and regional observers.
Opposition fighters shot down a Syrian government helicopter over Beit Jin near the mountain, pro-opposition media said.
The Syrian Coalition and Lebanese media also reported on the downed helicopter.
A pro-regime media group, Damascus Now, said the crew had been killed.
This video was shared by the Sheikh Mountain Coalition, a rebel group based in the region west of Damascus.
It shows a helicopter, possibly an Mi-25, with smoke and flame coming out of it. The video then cuts to what is described as a crash site. Credit: Sheikh Mountain Coalition via Storyful