Montreal police Const. Dany Richer said officers carried out nine searches today in Montreal and Laval-area homes and stores.
He said the searches led to the arrests of seven people — men and women between the ages of 30 and 50.
Richer said four of those people are facing charges of attempted murder, and three of them are facing narcotics-related charges.
"Investigators believe it's related to Asian organized crime," Richer said.
The investigation stems from a stabbing that took place outside on Dec. 28 near the corner of Bélair Street and 12th Avenue in Montreal's St-Michel neighbourhood.
The victim, a 22-year-old man, was severely injured.
Another man, 21, was arrested on the scene.
At the time, police said blood spatter led them to a nearby house, where they found a marijuana grow-op.
According to Richer, police now believe that two suspects were trying to get inside that residence on Bélair Street.