An Edmonton man who says he acted in self-defence when he killed his ex-girlfriend and assaulted an undercover officer and a fellow inmate will undergo psychiatric evaluation.

Mark Lindsay, 25, confessed to the crimes Wednesday on the second day of his trial in B.C. Supreme Court on aggravated assault, weapons and robbery charges.

On Thursday, Justice Dev Dley approved a Crown application for the assessment at Forensics Psychiatric Services in Burnaby. The purpose of the assessment is to determine if Lindsay was suffering from a mental disorder when he committed the offences last year.

"Mr. Lindsay does not take issue with the acts with which he was charged because he says the reason for committing the acts was to prevent himself from being killed," the judge said in approving the application.

Lindsay testified on Wednesday that for the past three years he has been terrorized by serial killers who repeatedly threatened to kill him. He told court that he believes the threats are real and denied that he suffers from a mental disorder.

Dley said he was satisfied from Lindsay's evidence that a psychiatric assessment is warranted. A deadline of Sept. 14 was set for completion of the assessment.

Lindsay, who is being held in custody at KRCC, returns to court Tuesday on another aggravated assault charge. The charge arises from an incident last fall at KRCC, where he stabbed his cellmate in the eye with a pencil, causing the victim permanent blindness in one eye.

In his testimony, Lindsay said he believed the cellmate also intended to kill him. Similarly, he testified he killed his ex-girlfriend in Alberta and later attempted to kill an undercover police officer in Barriere thinking they, too, were going to kill him.