Police are unravelling the troubled history of a former couple involved in a Logan house fire that has left both of them dead.
WARNING: This story contains graphic descriptions of violence that may disturb some readers
Stanley Obi, 33, died in hospital last night after sustaining critical burns to 90 per cent of his body when his former partner, Sarah Mudge, allegedly doused him and his new girlfriend with petrol and set them on fire.
Queensland police said Mr Obi died at 10pm last night.
His girlfriend, 30, escaped the house with minor burns to her throat and was taken to the Royal Brisbane and Women's Hospital for observation.
Ms Mudge, 31, is believed to have perished in the fire as it engulfed the home on Bidyan Boulevard in Logan, south of Brisbane.
An autopsy will be conducted on a woman's body found in the burnt-out house to confirm the identity.
Police said Ms Mudge somehow gained entry to the home and petrol was thought to have been "thrown around".
Police have since been investigating the pair's complicated relationship, which spilled over into the court system.
In the past year the pair took out domestic violence orders against each other, legal sources have told ABC News.
Mr Obi was a care manager for the Aveo Group's Newstead retirement community in Brisbane.
He bought the Logan property in 2019 and built the house where he has lived for the past several months.
In a statement, an Aveo Group spokesperson said Mr Obi had been a valuable and respected team member for some time.
"He will be greatly missed," the spokesperson said.
"We know that this news will impact a number of the staff and residents at Aveo, with whom he worked with closely.
"We will be providing counselling services to support all staff and residents.
"We will also do all we can to support Stanley’s family through this devastating time."
Woman's body yet to be formally identified
Fire crews were called to the property shortly before 3am on Thursday where they discovered a body believed to be that of Ms Mudge.
Police are yet to formally identify the body because the home's collapsed roof has hampered forensic team's efforts.
Ms Mudge, a mother of six, had been living in a rented house in the Ipswich suburb of Leichhardt where she ran a portrait photography company.
A man packing up her house on Thursday declined to comment to ABC News.
Ms Mudge's mother also declined to comment.
Authorities said the low-set home was "engulfed in flames" and the roof had partially collapsed, in a blaze police labelled "suspicious".
Police are urging anyone who knows Ms Mudge, Mr Obi or any relations close to the pair to contact CrimeStoppers or the Logan District CIB.
Investigators will prepare a report for the state coroner.
Premier Annastacia Palaszczuk said the incident was an "absolutely tragedy".
"To wake up and read that news and hear that news is devastating. Domestic and family violence has to stop. There are far too many tragedies," she said.
"We need a society that values equality, that is respectful. In terms of the police response, I am sure that there will be a thorough coronial inquest into this."