A Canadian man accused of killing and dismembering a Chinese student in Montreal in 2012 admitted on Monday to committing the acts he is accused of, but his lawyer said he is schizophrenic and therefore not criminally responsible.

Luka Magnotta, 32, admitted to the acts underlying the five offences he is charged with, including killing Chinese student Jun Lin, 33, but he also pleaded not guilty to each charge.

Magnotta is charged with first-degree murder, committing indignities to Lin's body and broadcasting obscene material. He is accused of dismembering Lin and mailing body parts to Canadian political parties and two elementary schools.