The accused, who suffers from schizophrenia, attacked a co-worker without provocation, striking her repeatedly with a metal brake part.
He was charged with attempted murder.
The matter was converted to a trial on consent, and a finding of guilt was made.
A hearing was then held to determine whether the accused was not criminally responsible on account of mental disorder.
Applying the Supreme Court of Canada's framework in Oommen, the court found that the accused's active psychosis deprived him of the capacity for rational perception and rational choice about the moral wrongfulness of his actions.
The accused was found not criminally responsible.