Because of number of other reports, I suspect it was an air strike.
Anybody that follows this knows that illegal invading Turks killed 80 Syrian government Troops first!! The Turks are about to get real bad bombed from the RUSSIANS very soon. We need to exit while they kill each other!!
When was the Turkish military invited into Syria by the lawfully elected and internationally recognized government of Syria?
Hell, a Russian aircraft was shot down for violating Turkish airspace for a few seconds...
Yesterday the Trucks laid artillery barrages on the Syrian army killing a number of them.