BEIRUT-- US-led coalition air strikes hit the Islamic State group Sunday in areas north of Syria's second city Aleppo where it has been fighting rival jihadists, a monitoring group said.
It was the first time that coalition aircraft had targeted ISIS in the Madajen area, where it has been fighting Al-Qaeda loyalists of Al-Nusra Front and their allies, the Syrian Observatory for Human Rights said.
The area lies between the ISIS stronghold of Dabiq and the town of Marea to the southwest, which is held by its rivals.
"At least 12 coalition strikes hit ISIS positions and weapons depots in areas that had never been targeted before," said Observatory director Rami Abdel Rahman.
"The strikes might help the rebels and Al-Nusra Front in their fight against ISIS," he added.
Al-Nusra and its allies have been battling ISIS in Aleppo province and some other parts of Syria since January.
The drive by ISIS to assert its dominance in rebel-held areas which culminated in its declaration of a "caliphate" straddling Iraq and Syria in June prompted armed resistance from the rival rebel groups.
Washington launched an air campaign against ISIS in Iraq in August, extending it to Syria the following month with the support of Arab allies.
AFP