One dead, another in custody after a Saturday-night fight

A 53-year-old man is dead after an altercation with another man Saturday night in downtown Montreal.
Around 9:30 p.m., police said they discovered the victim on Union Ave., near Ste-Catherine St.
According to witnesses, it was an argument that escalated.
One of them was stabbed in the upper body and was taken to hospital, where he died from his injuries.
The suspect, 66, was arrested on the scene and taken to a detention centre.
Investigators analyzed the scene and will try to determine the circ