Investigators believe the incident stemmed from a dispute between the victim and a 20-year-old suspect, who has been arrested. After a 911 call at 2:35 p.m., police say they found a man with several stab wounds to his upper body in an apartment on Alexis-Nihon Boulevard. A 20-year-old suspect was also hospitalized with stab wounds. Investigators believe the incident stemmed from a dispute between the two men. Police say the victim's death marks the 30th homicide of the year in Montreal.