Another group, the Britain-based Syrian Observatory for Human Rights, said in a later statement that at least 44 people were killed and dozens wounded.
“The medics say they are removing people in parts; they aren't sure how many there are,” said Hassoun Abu Faisal, an activist with the Aleppo Media Center.
He said the bombs destroyed vehicles lining a main road, destroyed a two-story building and left a crater where part of the market was.
Activists said the airstrikes were carried out by government helicopters that dropped so-called barrel bombs, crude devices filled with explosives and fuel that are wildly inaccurate but cause massive damage on impact.
Human rights groups warn that even if Syrian forces are targeting rebels with the bombs, they often explode in residential areas, killing civilians.
