In the southern countryside of jihadist-controlled Idlib province, the al-Qaeda-linked Hay’at Tahrir al-Sham
killed Muhammad Abu al-Biishr, the son of Suqour al-Sham military commander Aby Ayssa al-Sheikh during festivities in Mariyan town.This sparked outrage amid the FSA-affiliated faction which vowed vengeance.
Suqour al-Sham is part of Syrian Liberation Front (Jabhat Tahrir Souriya) alliance which also includes Ahrar al-Sham
...a Syria jihadi group made up of Islamists and salafists, not that there's that much difference, formed into a brigade. They make up the main element of the Islamic Front but they don't profess adoration of al-Qaeda and they've been fighting (mainly for survival) against the Islamic State. Their leadership was wiped out at a single blow by a suicide kaboom at a crowded basement meeting in September, 2014...
and the Nour al-Din al-Zenki Movement. The newly-formed group is engaged in a war against its main rival; HTS.
Ferocious battles broke out between the two warring parties across south Idlib and west Aleppo countryside , with both sides exchange control over several towns and villages, while sustain heavy losses.
In the same context, HTS security chief Abu al-Baraa was assassinated by person or persons unknown by opening fire at his vehicle near Hader town, south Aleppo countryside.