Private school captain Marco Yandle faces 10 years in jail after admitting assisting his father in the alleged “execution-style” murder of a homeless father in Kudla, Adelaide.

The former vice-captain of a prestigious private school faces up to 10 years in prison after pleading guilty to assisting his father in the alleged murder of a homeless man on his family property.

Marco Yandle, appearing in the South Australian Supreme Court on Monday, admitted helping his father Keith Yandle escape arrest following the alleged murder of Steven Murphy.

Police allege Keith Yandle executed father-of-two Murphy with an unlicensed firearm at Kudla’s property in Adelaide’s northern suburbs on the night of February 19, 2023.

The prosecution alleges that the entire incident was captured on the family’s CCTV system.

Marco Yandle leaves the Adelaide Magistrates Court with bracelets on his wrists on April 11, 2023

A tip led police to the property, where they found a marijuana farm and a grave inside an artificial bunker.

Marco Yandle, 20, was initially charged with murder along with his father, but police reduced the charges to help his father escape arrest or prosecution or dispose of the proceeds of crime.

The maximum penalty for the crime is 10 years in prison.

Judge Judy Hughes heard the prosecution and defense were awaiting a psychological report on Marco and victim impact statements.

Stephen Ey, for Marco Yandle, requested a sentencing date of July 5, which Judge Hughes accepted.

“I’m sure, as far as I’m concerned, we’ll be ready to go (then),” he said.

South African police allege Keith executed father-of-two Mr Murphy (pictured) overnight with an unlicensed firearm at the Kudla property in Adelaide’s northern suburbs.

Keith, 46, at a previous appearance in the Adelaide Magistrates Court on February 22, pleaded not guilty to the murder charge but attempted to plead guilty to the lesser charge of manslaughter.

Marco Yandle appeared in court via video link from jail on Monday, but will appear in person on July 5.

Keith Yandle, 46, during an earlier appearance in the Adelaide Magistrates Court on February 22, pleaded not guilty to the murder charge but attempted to plead guilty to the lesser charge of manslaughter.

“Not guilty, your honor, but guilty of manslaughter,” he told Magistrate Justin Wickens.

Prosecutors told the court they rejected Yandle’s plea offer and Wickens transferred the case to the Supreme Court of South Australia in May.

Family members and supporters of Marco Yandle and Murphy filled the court Monday.

Marco was the vice-captain of Trinity College, a coeducational private school in Gawler that charges up to $7,060 a year for high school seniors.