Homicide detectives have found a car driven by a Thai national 12 days before his body was found bound and gagged on the side of a Sydney road.
They believe the vehicle, which was found after tips from the public, could be key to unravelling the gruesome mystery.
Wachria "Mario" Phetmang, 33, was last seen alive on May 25 at a South Hurstville service station driving the silver 2004 Hyundai Terracan with Victorian registration URK109.
Police on Wednesday confirmed the car was not his and had been searching for it since Mr Phetmang's body was found bound, gagged, wrapped in plastic and covered in a mattress protector on the side of Homebush Bay Drive on June 6.
Investigators located the car after a public appeal on Wednesday, a NSW Police source told AAP.
It was found in Sydney but police are remaining tight-lipped about its specific location.
It is being tested forensically and AAP understands the discovery has opened new leads in the case.
"We are continuing to following multiple lines of inquiry and encourage the community to keep the assistance coming," Detective Superintendent Scott Cook said in a statement on Thursday.
Det Supt Cook had earlier described the case as "unusual".
"It does indicate to us certain activities of certain people but we don't want to be blind to all the motives," he said on Wednesday.
Mr Phetmang had no criminal history, was well-liked by friends and had been in Australia for about a decade, living in Hurstville.
Police continue to urge anyone with footage of the Sydney Olympic Park area in the days leading up to the discovery of his body to come forward.
Australian Associated Press