An alleged murderer auditioned for a movie about a murder investigation in outback Queensland while on the run from police.

Jonathon Stenberg, 46, is accused of murdering his neighbour Edward Kelly, 51, who was found decapitated at Broadwater in northern NSW on June 21.

He was captured in bushland in Darwin's rural area on Sunday after a six-day manhunt.

The producer of upcoming Australian film Mystery Road says Stenberg auditioned for a role in the film two days after the alleged murder.

Auditions for extras to work on the outback thriller were being held in a pub in Winton in western Queensland, where the movie is being filmed.

Stenberg reportedly gave his name as John Sergeant, and said he had no fixed address.

"He was friendly and helpful, even offering to do security on the film," producer David Jowsey said in a statement.

"We contacted him to follow up and he emailed back with his real name and mobile number."

Stenberg reportedly won the role as an extra, playing a policeman, but declined, saying he had to go to the Northern Territory.

Stenberg will be extradited from the Northern Territory to New South Wales later this week.

He will held at Berrimah jail in Darwin until Thursday and return to Sydney to face the Central Criminal Court on Friday.

NSW detectives have flown to Darwin to take Stenberg back to Sydney.

Mystery Road stars Aaron Pedersen, Hugo Weaving, Jack Thompson and Ryan Kwanten.

It revolves around a detective who returns to his outback hometown to solve the murder of a teenage Indigenous girl.

ABC/AAP