The sources said that the Al-Nusra terrorists were headed to the battlefields to fight with the ISIL terrorist group in Al-Huwayis village in Eastern Aleppo.
The sources said that a group of militants affiliated to the ISIL was likely behind the ambush operation.
The sources said that a sum of 31 Al-Nusra terrorists were reportedly killed and dozens more were injured in the ISIL attack.
The sources further said that the attackers were the remnants of Jund al-Aqsa which had not left Raqqa.
Their ambush was launched from Sinjar village in Southeastern Idlib. Soon after the ambush, they dispersed to the area East of the Hama- Aleppo Highway around the villages of Ma'arat al-Nu'aman, Sinjar and Abu al-Dhohour.
Reports said in late November that the army men hit the positions of the Al-Nusra Front in Southeastern Aleppo, pushing the terrorists back from a village and a key height.
The army soldiers stormed Al-Nusra strongholds from several directions and managed to capture the village of Jubb Awaz and Tal (hill) al-Sheikh Mohammad in Southeastern Aleppo.
The Al-Nusra suffered tens of casualties and its military equipment sustained major damage in the attacks.