12/04/2014 12:38 EST | Updated 02/03/2015 05:59 EST

Evidence completed at Luka Rocco Magnotta murder trial; deliberations next week

MONTREAL - Evidence wrapped up at Luka Rocco Magnotta's 10-week murder trial on Thursday, with jurors expected to begin their deliberations by the end of next week.

The case was adjourned until Wednesday, when the defence and Crown will likely deliver their closing arguments, followed by the judge's instructions to the jury.

Quebec Superior Court Justice Guy Cournoyer told jurors he believes the case will be in their hands as of Dec. 12.

"The expectation is I will give you my final instructions on Friday, therefore the expectation is you won't go back home on Friday," Cournoyer told them.

While 14 jurors have been hearing the evidence since the case began Sept. 29, only a dozen will deliberate.

Magnotta has pleaded not guilty to premeditated murder and four other charges related to the slaying and dismemberment of Jun Lin, 33, in May 2012.

His lawyer has argued he should be found not guilty because of a mental disorder.

The trial has sat for 40 days and heard from 66 witnesses, including some called on more than one occasion.

The final witnesses were defence psychiatrists Joel Watts and Marie-Frederique Allard, who'd previously appeared and were recalled to reply to testimony from the Crown expert.

Cournoyer told the jury an accused presenting a mental disorder defence is allowed to address new issues brought forth by Crown experts.

Watts and Allard both say Magnotta, 32, was not responsible for Lin's death because he was psychotic, had been untreated for a long-diagnosed schizophrenia for at least two years and wasn't able to tell right from wrong when he killed the Chinese engineering student.

The Crown argues the crime was planned and deliberate.

Gilles Chamberland, a psychiatrist who testified for the Crown, said he has doubts about Magnotta's schizophrenia diagnosis in 2001, but has said that even if it is accurate, nothing indicates he wasn't in touch with reality the night of the slaying.

Chamberland believes Magnotta isn't schizophrenic and that it is an error in diagnosis that has been repeated in his extensive medical history.

He testified that Magnotta's behaviour and traits are more in line with a variety of personality disorders. He also said a schizophrenia diagnosis is difficult to remove from a medical file.

Watts responded by saying the schizophrenia diagnosis carries weight because the vast majority of psychiatrists who treated Magnotta over the years came to that same conclusion.

But to say that no psychiatrist would ever change the diagnosis of someone in the same profession is inaccurate, he added.

"It's wrong to say that psychiatrists will simply rubber-stamp the same diagnosis made by other colleagues in the past," Watts said.

"It's in fact quite common that psychiatrists will commonly not agree with the opinion of another."

Chamberland referred in his testimony to Magnotta as a possible sexual sadist — someone who is aroused by administering pain. He also called him a psychopath during some media interviews he gave in 2012, but never testified to that effect before the jury.

Both Watts and Allard in turn said there is no evidence Magnotta is a sexual sadist and even less so that he's psychopathic, which is linked to an extreme anti-social personality disorder they believe the accused doesn't have.

"In the present case, I don't believe that Mr. Magnotta is a psychopath," Watts said. "If you're not anti-social, you're not going to be a psychopath either."

Besides first-degree murder, Magnotta is charged with criminally harassing Prime Minister Stephen Harper and other members of Parliament; mailing obscene and indecent material; committing an indignity to a body; and publishing obscene materials.

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