Hossein Jamal nom de guerre Abu Zeid, a security commander of the National Liberation Front, along with two other commanders namely Osama al-Jaqmara and his aide were killed after unidentified raiders opened fire at them in the town of Ma'arat al-Nu'aman in Southern Idlib.
In the meantime, Mahmoud Zab'an, a senior field commander of the National Liberation Front was also killed in a bomb blast near the town of Dar al-Izzah in Western Aleppo.
On Saturday, Mohammad Saleh Qatish, a field commander of Jund al-Aqsa, was killed after unknown raiders who opened fire at him in the village of Ma'ar Zita South of the town of Kafr Nubl in Southern Idlib.
In the meantime, Abu Aisha Tunisi, a notorious commander of Tahrir al-Sham, was also killed by unknown attackers in the village of Hass Southwest of the town of Ma'arat al-Nu'aman in Southern Idlib.
Also, a number of Tahrir al-Sham militants were killed or wounded after unknown attackers stormed their base in the town of Sarmada in Idlib province.
A base of Tahrir a-Sham also came under rocket attack in the town of al-Dana in Northern Idlib that left a number of fighters dead or wounded.
Tensions among terrorist groups have gone high amid reports of the Syrian Army's upcoming large-scale operation in Idlib province.