Benjamin Coman held delusions that his ex-partner's unborn child was not his when he killed the mother-of-two at their former household house.
He was additionally paranoid she was monitoring him utilizing a chip in his mind, believed supermarkets had been poisoning his meals and that he was being spied on, a Melbourne courtroom has been advised.
Coman, 31, confronted the second day of a pre-sentence listening to on Tuesday after he pleaded responsible to the October 2021 homicide of Michelle Darragh, 32, inside the house they as soon as shared with their kids in Bayswater North.
The couple had an on-and-off relationship.
She was 12 weeks pregnant when she died, and Coman needed her to abort their unborn baby.
Darragh was staying together with her mother and father when she went to the home on October 9 to gather some belongings.
Her father grew to become involved after she did not return house to her kids, so he drove to the home, the place he discovered his daughter's lifeless physique.
Coman claims there was a wrestle with a kitchen knife earlier than he stabbed Darragh to demise after which turned the blade on himself.
He was taken to hospital with inside abdomen accidents.
His psychological well being had deteriorated within the weeks previous to her demise and he was admitted to Maroondah Psychological Well being ward in mid-September for psychiatric assist after he tried to take his personal life.
Forensic psychiatrist Andrew Carroll was known as to present proof on Tuesday about Coman's psychological well being main as much as the homicide.
Following years of drug use, he stated Coman had developed psychotic despair, which included paranoia, voices, hallucinations and delusions.
"Objectively Mr Coman had no purpose to be offended with Ms Darragh. He did really feel offended on the time. His pondering the kid was the product of an affair, was a delusional perception," he advised the Supreme Court docket.
He stated Coman, an everyday methamphetamine, velocity and hashish person, additionally believed Darragh was monitoring him utilizing a chip in his mind.
"He got here to consider his associate might learn his thoughts by means of some gadget that had been inserted into his head by means of an operation just a few years prior," Carroll stated.
Earlier, Darragh's siblings learn statements to the courtroom and stared down Coman, who saved his eyes closed whereas within the dock.
"Do not be such a coward, open your eyes," her brother, James, stated to Coman.
Samantha Darragh described the heartbreaking 10-second name she acquired from her mom on the day her sister was murdered.
"I take into consideration mum screaming down the cellphone to me ... 'Ben's killed Michelle'," she stated.
"We trusted Ben, we trusted him with Shell. For him to take the life of somebody who he was supposed to like and defend simply reveals everybody who he actually is: a monster."
Coman's eyes remained closed till Darragh's niece learn her assertion.
He cried because the younger woman defined how Coman had comforted her at a member of the family's funeral earlier than he killed her aunty.
"The very fact somebody might do that to my lovely aunty makes me sick," she stated.
The listening to earlier than Justice Andrew Tinney will proceed on Thursday.
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