Two people were shot and two others stabbed in a clash between two groups near the exit of several St. Laurent Blvd. bars on Saturday night.
A police patrol noticed the four men on the street between Gibault and des Pins at around 3:10 a.m.
All of the injured were between the ages of 20 and 30. Three of them are in critical condition and police say they fear for their lives.
An investigation into the altercation is ongoing as police interview witnesses and check security camera footage.
None of the injured were known to police.
St.-Laurent Blvd. will be closed from Sherbrooke to Roy for most of Sunday as police investigate.
