Air strikes around the northern Syrian city of Aleppo killed at least 40 people on Saturday, most of them civilians, the Syrian Observatory for Human Rights said.
The pro-opposition monitoring group said there were at least six strikes on the outskirts of Aleppo and nearby towns. Dozens of people were wounded, it said.
"Some of the strikes in the neighborhood of Tareeq al-Bab appeared to be targeting rebel headquarters but instead the rockets fell in a busy street and caused heavy civilian casualties," Rami Abdelrahman, head of the Observatory, said by telephone.
