A monitoring group says at least 32 Islamic State (IS) militants have been killed in Syria's Raqqa Province in a series of air strikes believed to have been carried out by a U.S.-led coalition.
The British-based Syrian Observatory for Human Rights said on December 6 that more than 40 IS fighters were injured in the bombardment.
More than 15 explosions hit IS positions in the northeastern province, the monitors said.
Raqqa is the extremist group's Syrian stronghold.
The U.S.-led alliance started to launch air strikes in Syria more than a year ago.
In September, Russia, an ally of Syrian President Bashar al-Assad, also began an air campaign in Syria, saying it is targeting IS and other extremist groups there.