The accused drove a rented van down a busy sidewalk in Toronto, killing 10 people and injuring 16 others.
He admitted to the acts but raised a defence of not criminally responsible (NCR) under s. 16 of the Criminal Code, arguing that his Autism Spectrum Disorder (ASD) rendered him incapable of knowing his actions were morally wrong.
The court found that while ASD qualifies as a mental disorder under s. 16, the accused did not lack the capacity to rationally evaluate his actions.
He knew his actions were legally and morally wrong but chose to commit them to achieve notoriety.
The NCR defence failed, and the accused was found guilty of 10 counts of first-degree murder and 16 counts of attempted murder.