Appeal Court overturns murder conviction, finds Alberta killer was mentally ill

Alberta's top court has overturned a murder conviction, finding that a man was mentally ill when he shot and killed his brother.

The Alberta Court of Appeal has ruled that John Wayne Mock is not criminally responsible for the death of Timothy Mock at their Consort-area home in 2012.

John Wayne Mock admitted to the killing but claimed he was suffering from bipolar disorder at the time.

A jury convicted him in 2013 of second-degree murder and he was handed a life sentence with no change of parole for 14 years.

The Appeal Court says it agrees with defence experts who examined the accused shortly after the shooting and determined he was "actively ill."

Crown experts who had examined him 18 months after the killing testified otherwise.

Consort is about 350 kilometres northeast of Calgary.