Montreal police are investigating the death of a 22-year-old man after he was found unconscious by a passerby in the Ville-Marie borough.

They were alerted at around 1:30 p.m. Saturday, according to the Service de police de la Ville de Montréal spokesperson Caroline Chèvrefils. The passerby had found the victim lying on the ground behind a licensed building on Ontario Street near Bercy Street.

The man was pronounced dead at the scene, said Chèvrefils.

"Since the circumstances surrounding this death …