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Man decided lover couldn't live: court

AAP logoAAP 1/11/2016 Rebekah Ison

An accused Sydney murderer found dying, with a suicide note written on the wall, had decided his girlfriend couldn't live if he couldn't have her, a court has heard.

Shahram Hejabian, 40, has pleaded not guilty in the NSW Supreme Court to murdering Nouha Salame whose her body was found wrapped in a doona at his home at Doonside, in Sydney's west, in April 2014.

A court has heard the Iranian-born man complained in his note that Ms Salame had broken his heart.

He ended the letter, which was written in the Farsi language, by saying he loved "this lady" and "farewell", the court heard.

"From reading this (letter) you might conclude that if he had to live without her, then she could not live," prosecutor Tony McCarthy said during closing submissions on Tuesday.

"He was, I suppose, committing the ultimate act of domestic violence."

The court has heard Hejabian, who was persecuted because of his religion and spent time as a refugee in Turkey, has severe depression and PTSD.

He has pleaded not guilty to murder on the grounds that he was of substantially impaired mind at the time of the killing.

Defence barrister Mark Austin on Tuesday submitted his client's very serious suicide attempt and a lack of evidence that he had previously been violent to Ms Salame supported his impairment case.

He also said there was evidence Hejabian had previously reported auditory hallucinations.

"He caused the injuries to her because of a loss of control," Mr Austin suggested to the jury.

"That is support for the proposition that the acts ... were carried out by an individual who was substantially impaired at the time."

The court has heard Ms Salame's skull was fractured with a hammer-like object but ultimately died of asphyxia.

There's evidence she may have had her neck compressed or face covered while unconscious before she died, the court heard.

Mr McCarthy said the fact that she was only hit on the head "two or three times" suggested the attack was not "frenzied".

He also said Hejabian had given varying accounts of what had happened rather than just saying he could not remember the night.

In his defence, Mr Austin said Hejabian, who had originally said he had no memory of the events, only started recalling alleged details after he had been taken into custody and had allegations put to him.

He also said the man had been a carer for his seriously mentally ill wife.

"His condition could have only deteriorated over time given these circumstances," Mr Austin said.

Justice Peter Hidden is expected to start his directions to the jury on Wednesday morning.

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