A father and son allegedly carried out a "cold-blooded execution" at the rear of their property after coming across an intruder in their shed, a court has heard.
Keith Russell Yandle, 46, and his son Marco Anthony Yandle are accused of murdering missing man Steven Murphy, whose remains were found under a shed last week in an underground bunker.
On Tuesday, Marco Yandle's lawyer Sean Nottle argued his client should be given bail, saying he wasn't involved in the shooting death of the deceased.
"This is a 19-year-old man who accompanied his father, with a baseball bat to confront an intruder and it's only then his father — and his father alone who, on the prosecution case, is responsible physically for the death of the deceased," he said.
Prosecutor Lucy Boord KC argued against the application, saying there was concern the son could interfere with witnesses.
"One of those witnesses is his uncle, who has an intellectual disability," Ms Boord said.
"There is also evidence that, post-offence … this accused destroyed evidence from his mobile phone."
The court heard police salvaged CCTV footage that captured the alleged execution inside the shed.
"What is seen on that footage amounts, essentially, to the cold-blooded execution of an unarmed, vulnerable and defenceless man."
The prosecutor said the CCTV vision allegedly shows the father discharging an unlicensed firearm several times, while the younger man illuminated the victim holding a torch.
She said Keith Yandle fired a warning shot about one metre away from the victim, before his son searched Mr Murphy – determining he was unarmed.
"There are then at least three shots – probably four that are fired about 15 minutes later," Ms Boord said.
Mr Nottle told the court he had not seen any evidence that Marco Yandle had been responsible with anything relating to the destruction of CCTV footage.
"This is a young 19-year-old man in custody for the first time, albeit charged with a very serious offence, but one which it's clear that his participation is so much less than the principal offender," Mr Nottle said.
"He does not make any movement, he does not make any action, other than to simply watch and be present as his father discharges the shots towards the deceased.
"That'll raise questions along the track about whether or not the charge of murder might remain against Mr Yandle junior."
The magistrate denied the son bail saying there were no exceptional circumstances proved.
The older man didn't apply for bail.
The pair will face court in October.
