MONTREAL (AP) — A Canadian man accused of dismembering his Chinese lover and mailing the body parts to schools and political parties around the country admitted to the killing but pleaded not guilty Monday. His lawyer said he is schizophrenic and not criminally responsible in his opening remarks at the trial.

Luka Magnotta, who faces five charges in connection with the 2012 slaying of engineering student Jun Lin, appeared before a jury and Quebec Superior Court Justice Guy Cournoyer. The gruesome case shocked Canadians and quickly gained international notoriety after body parts arrived at offices of Canada’s biggest political parties and a video appeared online that prosecutors say shows Magnotta stabbing and having sex with the dismembered corpse.