The fatal knife injury sustained by a Lavington man would have required some force, a court has heard.
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Dr Jane Velutic gave evidence in Adam Azzi's murder trial on Wednesday, following the death of Lloyd Kennedy on November 6, 2016.
Dr Velutic performed an autopsy on Mr Kennedy four days after his death.
She said in a report a stab wound to the heart was the cause.
Mr Kennedy died at Albury hospital after the incident outside a Webb Street home, with the report noting the stab wound occurred to the left side of his chest and damaged his right ventricle and liver.
Prosecutor Paul Kerr asked the doctor about the force needed to inflict an injury to that depth.
"I think it is fair to say that it was more than a minor degree of force, so in terms of a moderate thrust would be what I imagine," she said.
I think it is fair to say that it was more than a minor degree of force
- Dr Jane Velutic, who performed an autopsy on Lloyd Kennedy
Mr Kerr asked that it would require "at least a moderate thrust?"
"Yes, I think that's fair," Dr Velutic replied.
Defence barrister Eric Wilson asked if two bodies clashing as one person held a knife, with the victim running at the accused, would be significant enough to cause the knife penetration.
Dr Velutic agreed.
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She also agreed one person falling on top of another with a knife could cause the injury.
The court heard Mr Kennedy died of blood loss from the wound.
The court heard he had a single stab wound in his chest.
Dr Velutic agreed the knife was inserted into his body in a vertical position and downward path, and was probably serrated.
Mr Kennedy had damage to his heart and liver.
The court heard he had a high level of alcohol in his system, about 0.20.
Forensic biologist Alexandra Bate also gave evidence about DNA profiles found on various items examined by police.
Many of the items had insufficient amounts of DNA material for testing.
Jurors also viewed three dimensional images taken from the front of Webb Street and inside the property, which belonged to Azzi's partner Lisa Restall.
The court has previously heard Azzi was staying at the home.
Leading Senior Constable Michael Faust showed the jury images taken from the road, which showed the front of the property where the incident occurred.
The jury also viewed the area around the front door, the backyard and a fence connecting to a Neptune Drive property, and multiple areas inside the home.
The images showed a knife on clothes near the kitchen, and table legs in various locations through the house.
The trial will continue in the Wagga Supreme Court on Thursday.