A 70-year-old Brisbane woman has been charged with murder almost three years after Isaac “Ike” Oar was found dead at a home in Ayr, south of Townsville.
Queensland Police arrested the Forest Lake woman on Tuesday following what investigators described as a complex and extensive inquiry into the 56-year-old man’s health, care and treatment. She has been charged with one count of murder, designated as a domestic violence offence, and was due to appear in Brisbane Magistrates Court on Wednesday.
The charge is an allegation. The accused is entitled to the presumption of innocence unless and until the prosecution proves its case in court.
Death prompted a lengthy investigation
Emergency services were called to an address in Ayr on August 10, 2023, where Mr Oar was found unresponsive. He was pronounced dead at the scene.
Mr Oar, who had Down syndrome and was non-verbal, was an NDIS participant. Police have said he weighed 29 kilograms when he died and was seriously malnourished. First responders described the circumstances at the property as confronting.
Detectives later began examining the circumstances of his life and death, including the care and medical treatment he had received. Police said the inquiry involved officers from the Crime Command Homicide Investigation Unit and the Ayr Criminal Investigation Branch.
The investigation became public in greater detail in January 2025, when police appealed for information. At that time, Detective Inspector Jason Shepherd said Mr Oar had not received professional medical treatment for more than a decade. He said the man’s condition could not have developed overnight and alleged there had been years of neglect “in some format”.
Police examined care throughout Mr Oar’s life
Investigators said they carried out extensive inquiries into Mr Oar’s health, care and treatment over the course of his life. That work continued for about three years before the arrest in Brisbane’s south.
Police footage released during the investigation showed officers moving through the Ayr dwelling, which contained large amounts of belongings. The material formed part of the public appeal as detectives sought information that could help establish the circumstances leading to Mr Oar’s death.
The murder charge is classified as domestic violence because police allege a family relationship between the accused and Mr Oar. ABC News reported that the woman is Mr Oar’s half-sister. No detailed prosecution case has yet been tested in open court.
Case now moves into the court system
The filing of a murder charge marks a new phase in the case, shifting it from a police investigation to criminal court proceedings. At an initial Magistrates Court appearance, procedural matters such as legal representation, custody and future dates may be addressed. Murder matters in Queensland are ultimately dealt with in the Supreme Court if they proceed to trial.
Further evidence, including medical and caregiving records, may become part of the prosecution brief. However, only evidence admitted through the court process can determine criminal responsibility.
The case also draws attention to the vulnerability of people with disability who depend on others for daily care and access to medical services. That broader concern does not determine the allegations against any individual, but it provides important context for why police said the inquiry required a close examination of Mr Oar’s treatment over many years.
Queensland Police have not publicly disclosed all evidence behind the charge. The matter remains before the courts, and further details may emerge at future hearings.
Sources: Queensland Police reporting carried by ABC News and Australian Associated Press.
