Warning: Graphic story content
Vince Li believed the voice of God told him to kill Tim McLean, Manitoba's Director of Forensic Psychiatry testified in court Tuesday.
Vince Li is accused of the second-degree murder last summer of Tim McLean, a 22-year-old man from Winnipeg who was killed in what passengers described as a random horrific attack.
According to Dr. Stanley Yaren, Li is a schizophrenic who hears voices.
Yaren, who has treated Li, told the court Li believed the victim was a force of evil.
Yaren says Li believed God told him he had to kill McLean and cut up his body in order to prevent him from coming back to life.
According to an agreed statement of facts between the Crown and defence, Li stabbed McLean dozens of times and continued to defile and cannibalize the body as police surrounded the bus.
Li's lawyers are arguing he is not criminally responsible for the slaying because he is mentally ill.
Dozens of the victim's relatives and friends are in the courtroom -- many wearing T-shirts and pins with McLean's face on them.
Li's lawyers are not disputing that he killed McLean, but will argue Li was mentally ill and not criminally responsible.
Warning: Graphic story content follows ...
McLean was taking a Greyhound bus home to Manitoba after working at an Alberta fair last July.
Passengers have said he was sleeping near the back of the bus and listening to music on his earphones when he was stabbed repeatedly.
They said the bus pulled over and they scrambled to get out while the attacker methodically carved up McLean's body.
In an agreed statement of facts between the Crown and defence Tuesday, lawyers provided more gruesome details from the night of the attack, including that an injured Tim McLean tried to escape through a back window of the bus.
Court heard that Li, armed with a knife, also tried to exit the bus, but the door was closed on his arm.
According to the Crown Li then went back to McLean's body and decapitated it.
Then as passengers stood outside the locked bus, he walked to the driver's seat and dropped McLean's head in plain view.
Police tactical teams eventually arrived and arrested the suspect when he tried to climb out a bus window.
The Crown says RCMP members found a bag in Li's pocket containing body parts.
The Crown also says McLean's eyes and at least one-third of his heart were never recovered, suggesting cannibalism.
No one who witnessed McLean's death is expected to testify at Li's trial.
It is scheduled to last three days and will only be heard by a judge.
With files from the Canadian Press
CTV's Kelly Dehn is following this story.
