Queensland police have charged a man over the alleged cold case murder of Gregory Thurlow more than 20 years ago.
Mr Thurlow, 27, was last seen in October 1996.
A review into the case began in March and new witnesses have come forward following an appeal for information.
A 59-year-old man from Burpengary East, who was interviewed as part of the initial disappearance investigation, has been arrested and charged.
Police said they believed he was the main person of interest in the case, but were also following other lines of enquiry.
Mr Thurlow was last seen leaving a Bray Park residence in a vehicle with a male associate.
Comprehensive review
Police will allege Mr Thurlow was killed at Scarborough or elsewhere in Queensland shortly after the vehicle was seen parked along Anzac Avenue in Mango Hill in Brisbane's north.
SES and police recently searched a property in Mango Hill.
Detective Senior Sergeant Tara Kentwell said the case review had been comprehensive.
"We reviewed thousands of pieces of information dating back to 1996, we've interviewed and re-interviewed witnesses and conducted forensic reviews of available exhibits," she said.
"We've used modern policing methodologies to progress a historical investigation to this stage.
"Sadly, Greg's parents Jean and James are no longer with us, passing away without knowing what happened to their son."
A $500,000 reward for information leading to a conviction over Mr Thurlow's death remains on the table.
"We believe there are still witnesses out there who hold vital information and we would appeal to any person who holds information to come forward," Detective Senior Sergeant Kentwell said.
