Longueuil stabbing injures 3, 1 of them critically

A man in his 30s is in critical condition after he was stabbed Sunday morning near the Metro station in Longueuil. 

He was transported to hospital around 7 a.m. following the attack in the station's parking lot. A woman and a man also suffered minor injuries.

Longueuil police have set up a large security perimeter and have closed the westbound side of St-Charles Street to traffic. 

Investigators are trying to determine the motive for the stabbing.