The defendant, an inmate, was attacked by other inmates in a detention centre.
He defended himself using a makeshift weapon and was subsequently charged with assault and assault with a weapon.
The court examined the evidence, including security video, and the defendant's claim of self-defense under section 34 of the Criminal Code.
The court found that the defendant's use of force, including a weapon, was reasonable given the circumstances of a violent prison environment where official intervention was slow and inadequate.
The defendant was found not guilty of all charges.