05/22/2012 02:28 EDT | Updated 07/22/2012 05:12 EDT

Man who beheaded fellow bus passenger thought victim was an alien: supporter

WINNIPEG - A man who beheaded and cannibalized a fellow passenger on a Greyhound bus thought he was attacking an alien, according to a supporter.

Vince Li is filled with remorse for his actions and understands he is a schizophrenic who must remain on his medication, Chris Summerville said Tuesday.

"(Li feels) remorse, a degree of humility — I know a lot of people won't believe that — regret and a sense of torment," Summerville said.

"He understands now that schizophrenia is a mental illness which plays tricks on the brain. He knows that the medication works to keep the voices away."

Summerville, head of the Manitoba Schizophrenia Society, has met with Li roughly every two months over the last four years. He feels Li has not been treated fairly by the media or the public, so he conducted a 45-minute interview with Li last weekend with the hope of shedding light on Li's progress.

Summerville released an edited transcript to the media Tuesday, in which he and Li discuss the night of July 30, 2008, when Li sat on a bus next to Tim McLean, a young carnival worker who was coming home to Winnipeg.

"He was on the lookout for aliens as such, and the voice of God told him that Tim McLean was an alien and he needed to destroy him lest Tim destroy other people," Summerville said.

McLean had his eyes closed and was listening to music on his headphones when Li suddenly stood up and started stabbing him. As the bus stopped and horrified passengers fled, Li carved up McLean's body and ate portions of it.

Li was found not criminally responsible for the crime and placed in a locked wing of the Selkirk Mental Health Centre. Initially, he was not allowed outside, but over the years he has gained more freedom.

Last week, a Criminal Code review board ruled that Li can start having escorted trips off the hospital grounds and into the nearby city of Selkirk. The ruling sparked renewed outrage from some members of the public, prompting Summerville to interview Li.

According to Summerville's transcript, Li recognizes that people fear him.

"I understand people are scared because of my behaviour on the Greyhound bus. I am not at risk for anybody. I don't believe in aliens. I don't hear voices," Summerville quoted Li as saying.

"I take my medication ... everyday. I am glad to take it. I don't have any weird voices any more."

Li also told Summerville he would like forgiveness.

"I would do anything for (McLean's) family. I would ask forgiveness, but I know it would be hard to accept," Summerville quoted Li as saying.

That forgiveness may be a tall order.

"I think for the advancement of my own being ... my own soul, I will have to come to a place of accepting," Carol DeDelley, McLean's mother, said Tuesday.

"But what would be unforgivable for me would be ... to not do anything to try to prevent this from happening again by the same perpetrator. I don't think Vince Li can be trusted to take his medication."

DeDelley wants Li kept in a mental hospital permanently, but expects that he will gain more freedom every year until he is eventually released.

"If he's not responsible for his own behaviour, then the state, the government, must step in and be responsible for him for the rest of (his) natural life."