Twin blasts at Syria's Aleppo University

This was the moment of impact... Panic after a second explosion ripped through Aleppo University, in this latest video posted to a social media website. Twin blasts, which took place on the first day of exams, killed 52 people and wounded dozens.

Other video showed extensive damage inside one of the buildings.

Opposition fighters and the Syrian government are each blaming the other for the deadly attack.