Two men have died after a Sunday morning brawl in downtown Montreal.

Police officers found four people lying on the ground on St. Laurent Blvd. between Guilbault St. and Pine Ave. at 3:10 a.m. Sunday.

Two of the men had been shot, while two had been stabbed.

All four were rushed to hospital, with three of the men in critical condition.

Two of those men did not survive their injuries and died on Sunday evening.

All four men were between 20 and 30 years old.

Investigators spent all day Sunday at the scene collecting evidence, including surveillance video, to determine exactly what led to the deaths and serious injuries.