Quebec 2026 Homicide Victim List

The Sûreté du Québec (SQ) is investigating a suspected homicide at the Roberval detention centre after a 51-year-old inmate died following an alleged assault by another prisoner.

The incident reportedly occurred shortly after midnight between Wednesday night and Thursday October 1st morning. The victim, Marc Gilbert, suffered serious injuries and was taken to hospital, where he later died.

According to SQ spokesperson Frédéric Deshaies, investigators from the unit specializing in crimes against persons have taken over the case. The suspected attacker was questioned and is expected to be interviewed again as the investigation continues.

Update: Alexandre Lemay-Séguin, 34, was officially charged with second-degree murder in connection with Gilbert’s death. Lemay-Séguin, who shared a cell with Gilbert, was already serving a prison sentence for theft, cigarette-related fraud, and counterfeiting offences.

The Roberval facility houses inmates serving sentences of less than two years.