At least 12 people were killed on Friday in government shelling of a Syrian Kurdish town in the northern province of Aleppo, a monitoring group said.
"Twelve Kurdish citizens, including six children ... were killed in government shelling of an area in the town of Tal-Aran," the Syrian Observatory for Human Rights, said, adding that at least 11 other people were wounded.
The town is east of Aleppo city, and near the town of Sfeireh, which is largely controlled by jihadist fighters and has been a key target for the regime in recent weeks.
The Observatory said another nine people had been killed in shelling on Tal-Aran and the surrounding area on Thursday, including five children, bringing the toll in 24 hours to 21 people.
Tal-Aran is considered strategic because of its location on the main road between Aleppo city and Sfeireh, which is near a regime military site that is believed to hold some of Syria's chemical arms.
In eastern Syria, meanwhile, rebels advanced in the city of Deir Ezzor after fierce clashes with regime troops overnight.
"Clashes took place overnight between rebels and regime forces in several neighbourhoods in the city of Deir Ezzor," the Observatory said.
The Britain-based group also reported regime air strikes and clashes in the city of Deir Ezzor, which lies in the eastern province of the same name, on Friday morning.
The strikes left people wounded and destroyed several houses.
The Observatory, which relies on a network of activists, doctors and lawyers on the ground, said initial reports suggested rebels had taken an area near the Rashdiya district that had been under government control.
Al Jazeera cannot independent confirm the Observatory’s reports because of restrictions on reporting from within Syria.