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Call for public help in Trett suspected murder

Posted on 10/08/2018

Images of a mobility scooter and a distinctive motorbike helmet have been released in relation to the suspected homicide of Adrian Trett, who was found unconscious on David Street, Mannum early on Monday 23 April 2018.

The 45-year old was taken to hospital with a serious head injury, but never regained consciousness and died in the Royal Adelaide Hospital on 5 May.

His death is being treated as a homicide, and investigators have released images of a mobility scooter and helmet in the hope it will encourage further assistance from the community.

Police have seized a mobility scooter they believe is linked to the case for further forensic examination and are seeking information about that vehicle and anyone who saw it around the time of Mr Trett’s death as they believe it was used to move him from an Asmus Street address to nearby David Street.

Efforts are underway 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.

While his motorbike was recovered alongside Mr Trett, his helmet was missing.

Investigators are also wanting to identify two or possibly three people – one of whom may have been a woman – who were seen attending to Mr Trett and wrapping him in blanket while he was in David Street.

Anyone with information that may assist is asked to call Crime Stoppers on 1800 333 000 or report online at

Rewards are available and you can remain anonymous.


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