A woman has been charged with murder following a 15-month police investigation into the death of her husband who allegedly died of a prescription medication overdose. 

Queensland police arrested Kylie Truswell-Mobbs, 50, at her Alexandra Hills home in Brisbane’s south-east on April 2.

Homicide detectives later charged her with murdering her 56-year-old husband David Mobbs, who police say was terminally ill.

Police launched ‘Operation Victor Verdoy’ to probe Mr Mobbs’ ‘suspicious death’ after investigators allegedly found had died from lethal levels of prescription medication.

Queensland Ambulance members attended the home on November 29, 2023 after the dying man complained of chest pains.

It’s understood Mr Mobbs suffered from motor neurone disease and died on December 6, 2023.

Investigators were later called to the Alexandra Hills home just before 10pm the next day after being informed of the Mr Mobb’s death.

A spokesman for Wynnum Criminal Investigations Branch and Crime and Intelligence Command detectives said: ‘Investigations into the man’s death were complex.

‘Detectives conducted extensive and thorough inquiries into his health, care, and treatment around the time of his death.

Police also alleged Mr Mobbs was in his ‘last stages of life’ and Truswell-Mobbs took ‘unlawful actions in administering lethal levels of prescription medication to accelerate the man’s death’.

Detective Acting Inspector Rod Watts said investigators looking into Mr Mobbs health, care and treatment.

The top cop also said police were alerted to the situation by both the family and the care agency looking after the man.

‘We will allege that the man was in his last stages of life, however a 50-year-old Alexandra Hills woman took unlawful actions in administering lethal levels of prescription medication to accelerate his death,’ Det Insp Watts said during a press conference.

‘It will be alleged the man and woman were known to each other and were in a relationship.’

Det Insp Watts said domestic violence was not a factor in the investigation.

‘Our evidence and our investigations lead us to believe it is the offence of murder and not assisting suicide,’ he said.

‘The man was suffering from motor neurone disease and he was in and out of hospital in the weeks and months leading up to this time.

‘The acceleration of death, I can say was limited to hours after he was administered that prescription medication. Within hours he was deceased.’

Insp Watts said Ms Truswell-Mobbs allegedly administered the pain medication he was already receiving, but that she gave him ‘lethal levels’.

He said they were in a relationship for a number of years and lived together, however were not married.

Det Insp Watts said there had been ‘preliminary discussions’ with the man around assisted dying.

‘But none of that had been formalised,’ he told media.

‘As you can appreciate, there is a process you need to go through with assistance dying. And in this situation none of those processes were followed.’

Insp Watts said Ms Truswell-Mobbs was a carer for Mr Mobbs and there was also a care agency involved.

He said police had investigated if the man had wanted to die.

‘That has been part of our investigation for the last 16 months, which has obviously led us to yesterday charging this woman,’ he said.

‘We believe that her actions have amounted to murder. We will allege a motive but I’m not prepared to go into it at this moment.’

Insp Watts said the investigation was protracted because it involved extensive forensic testing and toxicology.

He said Ms Truswell-Mobbs had been cooperative with police.

Insp Watts said police were not investigating any alleged financial gain from the man’s death.

‘As you can imagine it’s a quite traumatic experience for the family to have gone through. It’s very emotional, it’s a very sad story unfortunately,’ he said.

Truswell-Mobbs, who lists her Facebook profile status as ‘widowed’, fronted Brisbane Magistrates Court today but her matter was adjourned and she was remanded in custody to next front court on April 28.

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