TORONTO – On January 12, 2011, Toronto police officer Sgt. Ryan Russell, 35, was killed while on duty.
Russell was hit by a stolen plow driven by Richard Kachkar, who had been on a two-hour rampage.
Last month, jurors in a Toronto courtroom found Kachkar not criminally responsible.
Although the defence is rarely used, the 46-year-old is the latest person to be declared not criminally responsible, or NCR, in a high-profile case.
The ruling means the person who committed a crime lacked the ability to appreciate what they did or know it was wrong due to a mental disorder at the time.
The interactive graphic below profiles several high-profile NCR cases.
With files from Rebecca Lindell, Global News
© Shaw Media, 2013