Longueuil police are trying to identify a suspect for having committed a theft at a high school in Boucherville, Montérégie.
The suspect allegedly committed a robbery on July 16, around 10 p.m., in De Montagne high school, said the Longueuil agglomeration police department (SPAL).
He would have stolen the handbag of his victim and fled, before being caught by the latter to whom he would have struck at the party until he lost consciousness.
According to the composite portrait painted by the police, the suspect is a 20-year-old white-skinned man. He is 1.83 m tall, weighs 77 kg and has blond hair.
Anyone with information that can help locate the suspect can call 911.