The army also targeted the militants’ hideouts in the areas of Kafrouma, Hass, Kafraya, Khan Sheikhoun and Ma’aret Hirma in Idlib countryside.
Large groups of the militants were killed and injured during the counterattacks.
The areas where the clashes broke out are located in a planned buffer zone that surrounds Idlib and also parts of the adjacent provinces of Aleppo and Hama.
Under a deal reached following a meeting between Turkish President Recep Tayyip Erdogan and his Russian counterpart Vladimir Putin in September, all militants should have withdrawn from the demilitarization zone by October 15.
However, al-Qaeda-linked Takfiri terrorists said they refuse to either leave the buffer zone or hand over their weapons.