Police reveal more information about the suspected homicide of a Mannum man

As investigations into the suspected homicide of Mannum man Adrian Trett continue, SAPOL have released images of a mobility scooter and ‘distinctive’ motorbike helmet, which they suspect were utilised on the night the 45-year-old died.

Mr Trett was allegedly found unconscious and wrapped in blankets on David Street in the early hours of the morning on April 23.

Mr Trett was taken to the Royal Adelaide Hospital with a serious head injury, but never regained consciousness and passed away on May 5. 

After police announced the death was being treated as a homicide in June they appealed to the public for assistance to establish the full circumstances.

Inspector Billy Thompson, the acting officer in charge of Major Crime, said police have seized a mobility scooter they believe is linked to the case for further forensic examination.

“We believe we have located the mobile scooter (similar to the one pictured), but we are seeking information about that vehicle and anyone who saw it around the time of Mr Trett’s death as we believe it was used to move him from an Asmus Street address to nearby David Street,” he said.

Investigators are also making enquiries to locate a black motorbike helmet with a distinctive “8” emblazoned on the side, making the appearance of an eight ball, which was owned by Mr Trett.

“An associate of Mr Trett was captured on CCTV at the Mannum On the Run Service Station at 9.18pm on Sunday night (22 April) wearing the helmet and riding Mr Trett’s small motorbike, prior to the victim being found unconscious in David Street about 6.30am on Monday 23 April,” Mr Thompson said.

“Mr Trett’s motorbike was recovered alongside him in David St, however the whereabouts of the helmet at this time are unknown.

“Major Crime investigators are currently making enquiries with associates of Mr Trett relevant to this investigation in Victoria,” he added. “It is hoped that information provided by those associates will benefit the investigation.”

Police are eager to identify two, with the possibility of a third, people who were seen attedning to Mr Trett and wrapped in a blanket while he was in David Street.

Anyone with information that may assist investigators is urged to call Crime Stoppers on 1800 333 000 or report online at www.crimestopperssa.com.au.