A spokesman for Syria's main Kurdish force has called on the U.S.-led coalition to attack Islamic State group positions in northeastern Syria where the jihadis are on the offensive.

The call by Redor Khalil came as activists said dozens of Kurdish and IS fighters were killed this week in clashes near the Syrian village of Tal Tamr.

Khalil, a spokesman for the People's Protection Units, or YPG, also called in his statement for young men in the area to join the battle against IS.

Weeks of airstrikes by the U.S.-led coalition recently helped tip the balance against IS fighters in their attack on the northern Syrian town of Kobani.

Since then YPG fighters have regained full control of Kobani as well as dozens of surrounding villages.