A Quebec Superior Court judge will decide in January whether the young man who killed his parents and his grandmother inside the family’s home in Rosemont two years ago was unable to tell right from wrong when he carried out the slayings.

On Thursday at the Montreal courthouse, Justice Annie Émond heard more evidence in the case of 22-year-old Arthur Galarneau. Émond was told that Galarneau had been suffering from schizophrenia for at least three years when, on March 17, 2023, he stabbed his parents — Mylène Gingras, 53, and Richard Galarneau, 53, and his grandmother, Francine Gingras-Boucher, 75 — inside the family’s duplex on Bélanger St.

Lawyers from both sides of the case have asked that Galarneau be found not criminally responsible.

Prosecutor Jade Coderre referred to an evaluation

See Full Page