Today marks the 20th anniversary of the disappearance of Steven Williams, a former president of the Gypsy Jokers.
Steven Williams was last seen at the Gepps Cross Hotel on the afternoon of 14 June, 2005. His white Ford Falcon was later found abandoned in the hotel car park.
It is suspected Steven Williams was murdered. His body has never been found, and his disappearance was declared a Major Crime.
In late 2005, a call was made to Crime Stoppers which led police to searching a trucking company at Gillman.
It is believed that Mr Williams, a debt collector, was dropped at Gillman by an associate – most likely to collect money from someone who worked there.
It is likely his body was removed from the business in the rear of a white utility – covered by a tarpaulin – seen parked in a street adjacent to the property later the same day.
Despite extensive searches over the years, no trace of him has ever been found.
Steven Williams was 38 when he went missing, leaving behind a young daughter.
Major Crime detectives believe this case is solvable; and that there are people who know exactly what happened to Steven Williams.
Detective Sergeant Paul Ward, Major Crime Investigation Branch, said, "Despite the code of silence in outlaw motorcycle gangs, we have received information over the past 20 years regarding the circumstances of Steve's disappearance, as well as potential burial sites.
"Over the last 20 years, friendships and loyalties may have changed. People are 20 years older, they may now have children of their own. I ask them to put themselves in Blayze Williams' position, growing up not knowing what happened to her father.
"For the sake of the Steven Williams' family, if you have information, please contact Crime Stoppers and help find his remains and bring him home to his family."
A $200,000 reward is still on offer for information that leads to a conviction, or the recovery of Steven Williams' remains.
Anyone with information is encouraged to contact Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au – you can remain anonymous.