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Rebel forces from Jaish Al Islam (Army of Islam) hold a position behind a sand barrier on Tuesday on the frontline in the Bashkoy area, on the northern outskirts of Aleppo. Image Credit: AFP

Beirut: Daesh terrorists seized five villages from rebel forces in Syria’s northern Aleppo province overnight and entered the outskirts of a key opposition bastion there, a monitor said Thursday.

The terrorist group seized three villages near the town of Marea and entered its southern outskirts, the Britain-based Syrian Observatory for Human Rights said.

Daesh terrorists took another two villages further north in Aleppo province, near the border with Turkey.

Those two villages were previously controlled by Al Nusra Front, Al Qaida’s Syrian affiliate, which withdrew from them after Turkey and the United States announced plans to cooperate on a Daesh-free zone in the area.

Marea is one of the most significant rebel-held towns in northern Aleppo and lies on a key supply route running to the Turkish border.

Daesh has targeted the town for months, seeking to expand westwards from territory it already holds in Aleppo province.

The Observatory said there were reports of dozens of rebel casualties in the fighting, but it had no immediate toll.

It also reported an Daesh car bomb on the southern outskirts of Marea on Thursday morning, but had no details on deaths or injuries.

The Daesh advances come despite an agreement between Turkey and the United States to work on the establishment of an Daesh-free zone in northern Aleppo.

The plan has backing from some rebel forces on the ground, including the powerful Islamist Ahrar Al Sham movement, which Washington does not work with.

But Al Nusra has rejected the proposal, despite its opposition to Daesh, and earlier this month withdrew from its front lines against Daesh in Aleppo in order to avoid cooperating with the plan.

It turned those positions over to other rebels.

More than 240,000 people have been killed in Syria since the conflict began in March 2011 with peaceful anti-government protests.

It has evolved into a complex multi-front war, with regime and rebel forces as well as Kurds and Islamist militants involved in the fighting, and a US-led coalition carrying out air strikes against Daesh.