WATCH: 47 Fighters Killed in Clashes Between ISIS and Syrian Rebels

Renewed fighting raged over the weekend around the rebel-held town of Marea, near the Turkish border, the Britain-based Syrian Observatory for Human Rights said.

AP

REUTERS - At least 47 fighters were killed in clashes between the Islamic State group and Syrian insurgents, a monitor said on Saturday, in an area where the United States and Turkey are planning to open a new front against the ultra-hardline group.

The renewed fighting raged on Friday around the rebel-held town of Marea, 12 miles from the Turkish border, the Britain-based Syrian Observatory for Human Rights said.

The area falls within a "safe zone" Turkey said last month it would set up in northern Syria to help keep Islamic State at bay.