Syrian activists say at least 65 bodies, some of them with their hands tied behind their back, have been found on a river bank in the northern city of Aleppo.
The head of the Britain-based Observatory for Human Rights Rami Abdul-Rahman says the bodies were discovered Tuesday in the city's contested district of al-Bustan al-Qasr. All of the dead are men.
Abdul-Rahman says it's not clear who was behind the killings, when they occurred or who the dead are.
The Local Coordination Committees activist group put the number of bodies found at 80.
In videos activists posted online, dozens of bodies are seen lying on the ground along a river, their hands bound behind their backs. Some appear to be bleeding from what could be gunshot wounds to the head.