Federick Gingras, a man with a history of mental health issues, killed two people during a drug-fueled rampage in 2016.
He will serve 19 years in jail for the murders.
Gingras was convicted of killing his roommate with a shotgun after ingesting a large quantity of cocaine.
He then left the apartment and approached a woman who was waiting in her car for her daughter to finish work at a gas station, shooting and killing the 49-year-old.
Gingras stole the woman’s car and soon crashed it. He broke into a nearby house, shot the occupant and stole that person’s car, sparking a chase with Montreal and Surete du Quebec officers before being arrested in Brossard.
While he was charged with two counts of first-degree murder and three counts of attempted murder, the case was complicated by his long history of mental illness, including schizophrenia. Last month, his defence team and the Crown reached a plea bargain that would see him plead guilty to two charges of manslaughter.