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The trial of a mother accused of murdering her adult son with a fruit smoothie containing painkillers has heard there were no signs of leftover ingredients at the scene.
Maree Mavis Crabtree, 57, pleaded not guilty this week in the Brisbane Supreme Court to one count of attempted murder, one count of murder and one count of attempted insurance fraud.
Jonathan Crabtree, 26, was found dead at 9.55am on July 19, 2017 in the family's home at Maudsland, north of the Gold Coast, with an excessive amount of the prescription opioid oxycodone in his system.
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During the trial's second day on Tuesday, the jury heard testimony from one of the investigating officers, Michael Simmonds, who was a Queensland Police Plain Clothes Senior Constable based at Coomera at the time.
Crown prosecutor Philip McCarthy asked Simmonds to identify the objects and rooms depicted in police photos of the Crabtree family home.
The photos depicted numerous empty packages of prescription medications found in Jonathan's bedroom and an oxycodone bottle on the kitchen bench.
Crabtree's barrister, Angus Edwards, then cross-examined Simmonds about what was catalogued by forensic officers.
Simmonds said it was correct that no fruit other than bananas, no fruit skins or pits, and no empty bottles of juice or milk had been found in the home or its rubbish bins.
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"From your search conducted on the property there was no clip seal bag containing residue of crushed up tablets, true?" Edwards asked.
"I don't recall seeing any," Simmonds replied.
The court was also played audio from part of a 45-minute conversation between police and Maree Crabtree on the day her son's body was discovered on his bed.
In the audio, Maree said living in the same house as Jonathan was a "nightmare" due to his drug addiction, mental health problems and violent behaviour brought on by a car crash and a traumatic brain injury.
Maree told police that Jonathan had been admitted to psychiatric care and had attempted suicide in the past but she had difficulty believing he had deliberately overdosed.
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"He didn't seem suicidal. I would have picked it," Maree said in the audio.
Maree also told police Jonathan had the intellectual functioning of a six or eight-year-old child and they had both been upset after being told by a specialist that he would likely have to move to a mental health ward or aged care home in the future.
Maree said Jonathan had also told her on the afternoon before his death that it had been his "happiest day in years" as his $280,000 insurance claim was due to be paid.
"He talked about what he would spend the money on," Maree told police.
Maree has been accused of attempting to fraudulently obtain about $100,000 of Jonathan's insurance after he died.
The trial is due to run for three weeks before Justice Peter Davis.
Readers seeking support can contact Lifeline on 13 11 14 or beyond blue on 1300 22 4636.
National Domestic Violence Service: 1800 RESPECT (1800 737 732). If you are in immediate danger call triple zero (000).
