Israeli Prime Minister Benjamin Netanyahu on Saturday threatened to respond "powerfully" to any spillover of fire from Syria.
Netanyahu warned that the army will "react powerfully to any shooting to our territory."
An Israeli war jet attacked on Saturday Syrian President Bashar Assad's army posts and two tanks in retaliation for the 10 projectiles that hit the Israeli-held Golan Heights.
The projectiles reportedly caused no injuries or damage.
Syrian media said an unspecified number of people were killed in the war jet attack.
Israel has protested to the United Nations Disengagement Observer Force, which maintains the 1974 cease-fire between Israel and Syria, a military spokesperson said.
Israel called the errant fire "unacceptable violation of Israeli sovereignty."
Errant fire from the Syria, which is fighting a six-year-long war, has occasionally been spilling over to Israel, usually causing no casualties or damage.
Israel often retaliated the mortars with airstrikes.
Israel had repeatedly declared it would not intervene in the internal fighting in Syria.
However, it is widely believed that Israel often carried out airstrikes on weapons convoys in Syria, and has been providing medical treatment to hundreds of wounded Syrians who reached the border.
Source: NAM News Network