Anaru Ormond, Kallangur murder: Abusive boyfriend walked out of mental health unit four days before he stabbed Siva Auvae to death and set himself on fire

An abusive boyfriend who murdered the mother of his four children before setting fire to their house was released from a hospital's mental health unit just days earlier, it can be revealed.

Anaru Ormond, 32, repeatedly stabbed his long-time girlfriend Siva Auvae, 31, at their home in Kallangur, north of Brisbane, at 7pm on Saturday.

Ms Auvae was able to run about 100 meters from her attacker, but died in the middle of the street. Ormond then returned to the house to set it on fire and take off on foot.

A brief manhunt was launched for Ormond before he was taken to hospital due to serious burns he suffered from the fire and succumbed to the injuries on Sunday morning.

Ormond had been taken by police to Prince Charles Hospital in Chermside on December 3 but was released last Tuesday, four days before Ms Auvae was murdered.

It has since been revealed that just four days prior to the incident, Osmond had been released from the mental health unit at Prince Charles Hospital (pictured) after just a two-day stay.

A statement from Ormond's family revealed that the 32-year-old had battled a host of mental health issues before Ms Auvae's murder, including depression, agitation and sleep deprivation. Courier mail reported.

He was admitted to the mental health unit of Prince Charles Hospital on the orders of the Emergency Examination Authority.

The legal mechanism allows a person to be involuntarily transferred to a healthcare facility if they are considered to be at serious risk of harming themselves.

Ormond's family said he should have remained in the unit for “at least two weeks” because he was considered an “extreme case.”

They claim hospital staff allowed him to leave the ward after he showed signs of improvement as long as he continued to take medication and returned on Monday.

“Our big brother called the clinic to confirm this was true. They reassured him, based on their professional opinion, that Anaru would be fine,” the statement read.

Osmond was taken to hospital under an Emergency Examination Authority order which deemed his mental state a risk to the health of himself and others (circled, Osmond fled the scene)

Hospital staff assured Osmond's family that he had shown signs of improvement and that he could leave as long as he continued to take his medications and returned Monday.

A spokeswoman for Metro North, which oversees Prince Charles Hospital, offered condolences to those affected by the tragedy but stood by their decision to release Ormond.

“Metro North Health is not legally able to retain voluntary patients in its care for treatment,” she said.

'We cannot provide details of the specifics of this patient case as the matter is before the coroner.

'As part of our standard process, Metro North Health will review the care provided… Initial investigations indicate that treatment was in accordance with relevant clinical guidelines.'

Ms. Auvae's death comes just 16 days before Christmas, which would also have been her 32nd birthday.

Osmond is expected to die on Sunday after suffering severe burns from setting fire to the couple's home (pictured) shortly after Mrs Auvae died in the middle of the street.

It was revealed on Monday that Ms Auvae was mowing the lawn with her killer just hours before her brutal murder, CCTV footage showed.

Neighbors described hearing a “loud bang” and a “blood-curdling scream” before the fire.

Kiana Jeffrey was having a barbecue at the back of her house with family when she noticed smoke coming from the house.

“I quickly ran to the top of the driveway and my girlfriend walked up to our house yelling, stop, stop, stop,” she told the Courier mail.

“Then I looked and there was blood everywhere and there was a lady lying face down in the middle of the road.”

Ms Jeffery said Ms Auvae had fallen over in front of a house where Ormond had jumped the fence.

Residents left their homes to help the seriously injured woman.

“I just remember seeing her blood everywhere, there was a big puddle in the driveway and the whole police force just came flying in,” she said.

Mrs Auvae (pictured), a Maori woman, is remembered as a 'loving and protective mother of impeccable character'

Detective Harbison said the tragedy was a 'dynamic, evolving incident as police, paramedics and firefighters arrived'

Ms Auvae, a Maori woman who only recently moved to Queensland from Sydney, is described as a 'loving and protective mother of impeccable character'.

Detective Inspector David Harbison of Moreton Police told reporters on Sunday that police were investigating a domestic violence-related murder.

Ms Auvae's family have started a GiveALittle fundraising campaign to bring her body back to New Zealand and her four children back home.

“Her whanau here in New Zealand is doing everything they can to find out more details about her death and the events leading up to it,” her family said.

“There will be a lot of costs involved in getting her back to New Zealand and making arrangements for her four beautiful children.”

Police are calling on anyone who saw anything in the area at the time of the incident, or who has relevant dashcam or camera footage, to come forward.