Police believed they have cracked a 15-year cold case mystery, charging a man with the murder of Brisbane man Gerhard Wagner
Robert James Wagner, 53, was charged by detectives from Queensland Police's homicide squad on Wednesday morning.
He is set to face court on Wednesday afternoon and has also been charged with interfering with a corpse and stealing a vehicle.
The breakthrough comes after police launched an appeal for information in July and offered a $250,000 reward.
Police also raided a house in The Gap in August, where they searched through boxes and seized a number of diaries and journals.
Mr Wagner was last seen on January 7, 1999 when he left his friend's Hemmant workshop on his motorbike.
Investigators believed the 61-year-old intended to ride to his Wooloowin home, however he never made it.
Mr Wagner's disappearance was said to be out of character. Mr Wagner's body and his Kawasaki Virago 750 motorcycle were never found.
Detective Superintendent Steve Holahan said the Crime and Corruption Commission had supported detectives during the investigation.
"While I'm confident the arrest will provide some comfort to Gerhard's family, who joined us in appealing for information earlier this year, we are still committed to bringing closure to the family," Detective Superintendent Holahan said on Wednesday.
"This case highlights the fact police will continue to investigate unsolved crimes regardless of when they were committed. I would certainly encourage anyone who has information that could assist us in locating Gerhard's remains or in fact, any unsolved crime to contact police or Crime Stoppers."
In July, Mr Wagner's family made a public plea for help, with brother Paul choking back tears as he spoke to the media.
"It's still very raw," he said.
"We need to do this so that we can give him a decent burial and start to heal from this terrible tragedy."
Police said they believed Mr Wagner had met with foul play.
"Our investigations to date lead us to believe that Gerhard met with foul play on that day," Homicide's cold case Detective Superintendent Holahan told the media in July.
"You've got a motorcycle and a person, they just don't go missing off the face of the Earth."
If you have any information, contact Crime Stoppers on 1800 333 000.
