Canada bus killer Vince Weiguang Li 'believed victim was alien'

Vince Weiguang Li stabbed Tim McLean 50 or 60 times before cutting off his head

A man who beheaded a fellow bus passenger in Canada in 2008 has spoken out for the first time, saying he believed he was killing an alien.

In an interview with a schizophrenia society, Vince Weiguang Li said he had heard what he believed was "the voice of God".

Mr Li was found not guilty of murdering Tim McLean, 22, after being diagnosed with paranoid schizophrenia.

He has since been treated at a mental health centre near Winnipeg, Manitoba.

In the interview given to Chris Summerville, head of the Schizophrenia Society of Canada, Chinese-born Mr Li said he had bought the knife used in the attack for protection "from the aliens".

He said he had been unaware at the time that he suffered from schizophrenia.