A crack team of police officers has been set up to probe three suspected drug-world murders in South Australia, including one case with links to the Mid North near Port Pirie.
Police have targeted a 30-square-kilometre zone near Orroroo where they think missing man Robert Atkins' remains may be buried after he was murdered in the area around Port Pirie and Booborowie.
Mr Atkins was feared to have been tortured before his disappearance.
Photographs of a four-wheel-drive vehicle suspected of being involved in the matter have been circulated by the investigating team code-named Task Force Southern.
Major crime investigation branch investigators created the task force to look into the unsolved murders in the southern area of Adelaide.
The task force is made up of 42 personnel including investigators and intelligence officers led by Detective Superintendent Des Bray who said: "This is one of the largest task forces of its type assembled by SA Police using a handpicked team of experienced detectives, intelligence officers and forensic scientists."
There are three murders in particular where the victims and the alleged suspects are all believed to have been associated with the local methamphetamine and criminal scene across the southern suburbs of Adelaide.
Those alleged to have been murdered are Mr Atkins, Trevor King and Jeff Mundy.
In 2020, Mr Atkins, then a 31-year-old from the southern suburbs of Adelaide, is alleged to have been held captive for about a week before being forced to commit crimes for his captors.
It will be alleged that Mr Atkins thought that if he obeyed the direction of his captors he would be let go.
The last known sighting of him was captured on security vision where he is seen to be in the presence of another man and buys items from a store. Both are seen leaving the store together.
Mr Atkins is believed to have been murdered within the area of Port Pirie and Booborowie and his body left near Orroroo. The vehicle believed used by the suspect was captured by a safety camera on its way back to Adelaide near Willaston.
That car was a 2010 black Jeep Cherokee, Police know the registration number of the vehicle.
Mr Atkins is thought to have originally travelled up through Burra to Booborowie and Port Pirie and returned to Adelaide about dawn.
In February, 2019, it is alleged that Trevor King, then a 41-year-old from the southern suburbs, was the victim of unlawful detention and serious assaults, resulting from a drug debt.
The debt was initially $1000, but this was increased to $10,000 and then $50,000 because of the lack of a timely payment to the people whom he owed the money.
In late January, 2020, Mr King's body was found in West Lakes and was at first treated as suicide.
Investigations have now resulted in his death being declared a major crime and he is suspected of having been murdered.
Jeff Mundy, then a 36-year-old from the southern suburbs, was reported missing on December 23, 2020.
His last known sighting was on December 19, 2020, when he was captured on security vision while filling a script at a chemist in the Colonnades Shopping Centre at Noarlunga.
After an extensive investigation, there is no evidence consistent with him being still alive.
Mr Mundy's death has now been declared a major crime and it is feared he has been also murdered.
"It is alleged the men have all been murdered by low-level drug dealers and petty criminals who get together with others to bully, threaten and stand over others," Detective Superintendent Bray said.
If anyone has information about the murders of Robert Atkins, Trevor King or Jeff Mundy, they are asked to call Crime Stoppers on 1800 333 000.
Anyone with information that may assist and who is fearful about providing information or concerned for their safety should contact Crime Stoppers and ask to speak to a Task Force Southern detective.
Please call Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au anytime with information, no matter how insignificant you think it may be.