Syrian state media reported that Israel carried out a missile attack on southern Syria late on Tuesday, hitting an unspecified military site.
There was no immediate comment from Israel and the state TV report did not say if there were any casualties.
It said two missiles were fired towards the military site near the southern town of Quneitra, on the edge of the Israeli-occupied Golan Heights.
The Syrian Observatory for Human Rights, an opposition war monitor, reported from Britain that the missiles struck areas where Iran-backed fighters are based.
Israel has launched hundreds of strikes against Iran-linked military targets in war-ravaged Syria over the years but rarely acknowledges or discusses them.
Israel regards Iranian presence on its northern border as a red line, and it has repeatedly struck Iran-linked centres and weapons convoys destined for Lebanon’s militant Hezbollah group.