The appellant brutally assaulted two individuals while in a state of toxic psychosis caused by voluntary drug consumption.
He was convicted of aggravated assault at trial, as the judge applied s. 33.1 of the Criminal Code, which precludes self-induced intoxication as a defence for violent offences.
The appellant appealed, arguing he should be found not criminally responsible on account of mental disorder under s. 16.
The Supreme Court of Canada dismissed the appeal, holding that a toxic psychosis resulting exclusively from self-induced intoxication is not a 'mental disorder' under s. 16, but rather falls under the self-induced intoxication provisions of s. 33.1.