Photos — Vince Li Crime Scene

In March 2009, Li was found due to untreated schizophrenia . He testified that he believed God had commanded him to kill McLean to save people from a "space alien attack".

: After the driver stopped and other passengers fled, Li decapitated McLean and displayed his severed head through the bus window to the horrified witnesses outside. Vince Li Crime Scene Photos

On the evening of July 30, 2008, 22-year-old Tim McLean was traveling home to Winnipeg after working at a carnival in Edmonton. He was sitting at the back of the bus, asleep with headphones on, when fellow passenger (then 40) suddenly attacked him without provocation. In March 2009, Li was found due to untreated schizophrenia