Fighters from Al-Nusra Front and other Islamist opposition forces stormed several camps and checkpoints of the Syrian regular troops in the northwestern governorate of Idlib on Monday.
The attacks, reportedly backed by Syrian policemen, claimed the lives of at least 20 Syrian soldiers, pro-regime militiamen and 15 attackers, according to the Syrian Observatory for Human Rights (SOHR).
Al-Nusra Front - an affiliate of Al-Qaeda organization, and its allies managed to capture dozens of soldiers and briefly controlled the premises of Idlib Governor and the police command.
The Syrian Air Force retaliated by launching several attacks on Idlib city where four civilians were killed before restoring the premises of the Governor and the police command.
The opposition forces claimed in a statement that they controlled Tal Al-Mastouma, destroyed three tanks and captured two others.
They said a suicide attacker blew up the building of the governorate inside the security area to allow fellow attacker break into the building, kill dozens of soldiers and arrest 12 others before withdrawal.
In a related development a bomb blast killed three civilians, including a female child, in Al-Mayadeen town on the eastern rural outskirts of Deir Az-zor city, east Syria.
Meanwhile, fighting is still raging between the Islamic State in Iraq and the Levant (ISIL) and the Kurdish fighters in Ain Al-Arab (Kobane), north Syria, amid air attacks by the international coalition on ISIL gatherings in Al-Sinaa district of the city.
The ISIL fighters launched mortar and missile attacks on the defenders of Kobane near the borders with Turkey, SOHR reported, noting that one of the missile fell into the Turkish side of the borders.