DNA '100 billion times' likely from accused killer: court

Robert Ian Trebeck.
Robert Ian Trebeck. Photo Facebook

DNA found on Alexis Jeffery taken where her body was found on the banks of the Macintyre River in 2014 was "100 billion times more likely” to be from her accused killer, a court heard.

Swabs taken from Ms Jeffery's body were tested against a number of samples taken by police during the investigation into her murder, the Toowoomba Supreme Court heard.

Queensland Health DNA analysis unit scientist Matthew Hunt told the court swabs taken from Ms Jeffery's jaw and breast were "100 billion times more likely” to be from Robert Ian Trebeck.

Trebeck has pleaded not guilty to Ms Jeffery's murder after she was found on the banks of the river the morning of March 16, 2014.

Samples taken from other parts of the young mother's body, including her stomach, right shoulder, both thighs, left foot, rib area and left shoulder, he said, also matched although to lesser quantifiable degrees.

Goondiwindi woman Alexis Jeffery.
Goondiwindi woman Alexis Jeffery.

Traces from two other men were also found from samples collected at the scene.

DNA belonging to Daniel Rowsell, who Trebeck's legal team has suggested was responsible for Ms Jeffery's death, was not found, Mr Hunt said.

Police forensic scientific officer Senior Constable Mandy Watene earlier told the court she initially examined the crime scene from a boat due to the location where Ms Jeffery had been found.

Responsible for collecting samples from evidence seized by police, Snr Const Watene said no blood had been found inside cars belonging to Mr Rowsell and Trebeck, or on their clothing.

The trial before Justice Glenn Martin AM resumes on Monday morning.

Topics:  alexis jeffery goondiwindi murder robert ian trebeck toowoomba supreme court

Singer on path to stardom

VOCAL SKILLS: Year 12 student Alyssa Castle is well on her way to a promising singing career.

Student sets her sights high

Truck catches alight on Pacific Highway

MAKING SURE: Rural Fire Service members from Ulmarra and Gulmarrad drench the skip bin to ensure it does not re-ignite.

The fire halted southbound traffic on the Pacific Highway

Gulaptis backs dirtgirl on plastic bags

TEAM EFFORT: Cate McQuillen and Hewey Eustace with Member for Clarence Chris Gulaptis after receiving their Green Globe Award. Mr Gulaptis addressed Parliament about the pair's plan to make the Clarence Valley and North Coast single-use plastic bag free.

Local MP gets behind drive eliminate single-use plastic bags

Local Partners