Five rebel groups, hardline Islamist factions, launched an assault had launched on army positions near Baath City in Quneitra province near the Israel-Occupied Golan Hights, local activists said.
Hayat Tahrir al Sham along with Liwa al Sabtian, Jabhat al Thuwar, Jaish al Tawheed, and Alwiyat al Furqan, on Saturday, have formed an operation room called it Jaish Mouhammad that started its tasks by storming regime bastions Baath City near the town of Khan Arnabah, killing senior army officer.
Also in Qunietra, Israel said on Saturday it had targeted regime army installations after shells landed in the occupied Golan Height, Reuters reported.
Israel's military said 10 projectiles from inside Syria had hit Israel and it responded with an air strike on the position they were launched from, while the Israeli army targeted two Syrian army tanks.
In an earlier statement, the Israeli military described the shellfire into Israel as errant fire but it later called it an "unacceptable breach" of sovereignty.
The regime military source said Israeli rocket fire had hit a residential building, causing a number of deaths and damage. The source did not mention Syrian fire into Israel and said the Israeli strike was in support of jihadist rebels.
Israel has targeted Syria several times during the conflict, sometimes after projectiles have landed in the Golan Heights, but also to hit weapons supplies of Lebanon's Hezbollah group, which is fighting alongside the Syrian government
