Barrel bombs dropped from Syrian regime helicopters on Saturday killed at least 71 civilians in Syria's Aleppo province and wounded dozens, according to a monitoring group.
The Syrian Observatory for Human Rights said "at least 71 civilians were killed, and dozens were wounded, when regime helicopters dropped barrel bombs on the city of Al-Bab and in Al-Shaar in east Aleppo city."
Al Bab is controlled by ISIS, situated about 40 kilometres northeast of Aleppo city, while the east of the provincial capital is in Syrian opposition hands.
The director of the Britain-based monitoring group, Rami Abdel Rahman, said 12 people were killed in rebel-held Al-Shaar, including eight members of a single family.
In the Souk al Hal area of al Bab city, at least 33 civilians were killed while dozens others were wounded. The bodies of slain civilians were reportedly laid out on the streets of the neighborhood, an AFP correspondent at the scene says.
This comes a day after Syrian rebels seized the last remaining stronghold of the government forces in the country's northwestern province of Idlib.
Syrian regime sources said the army retreated to their coastal bases toward the city of Latakia.