Scott Graham Marle appeared in Moree Local Court on Tuesday where his legal team indicated a guilty plea to the lone charge of concealing a serious indictable offence of another person, namely murder.

It's been the police case that Marle knew what happened to Darryn Royce Willis in December 2010, but has kept it a secret since.

Mr Willis died after a night out in Bingara on December 10, 2010, but his remains have never been found.

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During the court proceedings, magistrate Holly Kemp committed Marle for sentence, and he will be formally arraigned and asked to enter his plea in the district court.

The case has now been moved to a Sydney court.

Marle won't be required to attend a mention of the case later this month, where his legal team will fix a date for his sentence hearing.

He remains on bail.

Marle was arrested by Strike Force Barca after he presented to detectives on October 1, last year.

Marle is the third charged in connection to the murder of Mr Willis, whose remains have never been found.

He was arrested one year on after co-accused Robert James Stonestreet and Bruce Anthony Coss were charged.

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Stonestreet is accused of concealing the murder, while Coss is accused of killing Mr Willis after a night out at the Imperial Hotel in Bingara on December 10, 2010.

Detectives allege Coss struck Mr Willis near his Bingara home, and killed him. He's then alleged to have dumped Mr Willis' body at an unknown location. His remains still have not been found.

Strike Force Barca was set-up by New England detectives to investigate Mr Willis' murder.

If found guilty of concealing a serious indictable offence of another, namely murder, Stonestreet and Marle face a maximum of five years' imprisonment.

Stonestreet and Coss remain before the courts.

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