Syrian Islamist rebels in an opposition-held area of Aleppo fought jihadists Friday, amid tensions between local dissidents and a powerful Al-Qaeda affiliate, activists said.

Activists meanwhile accused the Islamic State of Iraq and the Levant (ISIL), the Al-Qaeda-linked group, of opening fire on protesters in a rebel town in northwestern Syria.

“A number of opposition battalions… united under the name ‘Army of the Mujahideen’ fought fierce battles against ISIL around Atareb” in the province of Aleppo, said the Syrian Observatory for Human Rights.