Clashes in northwestern Syria have killed at least 42 fighters in last 24 hours, after regime bombardment on the region devastated health services.

The northwestern region has come under increasing fire by the regime and its ally Russia in recent weeks, despite a months-old buffer zone deal intended to shield it from any government offensive.

Syria’s former Al-Qaeda affiliate, Hayat Tahrir Al-Sham, controls most of Idlib province as well as parts of neighboring Aleppo, Hama and Latakia provinces.

The Syrian observatory for human rights said 16 loyalists and 19 fighters died in clashes in the area of Jabal Al-Akrad in Latakia province, which lies on the bastion’s northwestern edge.

Russian and regime aircraft bombarded the area, while they also hit southern parts of the jihadist stronghold.

To the south, rocket fire killed one child in the regime-held town of Suqaylabiyah in Hama province.