Authorities in South Australia have escalated their investigation into the mysterious disappearance of Trisha Graf, who vanished from the remote mining town of Andamooka in December 2025. The search operation has now entered a critical phase with investigators examining potentially hazardous locations in the harsh outback terrain.
New developments reveal that police recently conducted a thorough examination of a septic tank at a property near Graf’s last known location on February 23. Despite meticulous efforts, the search yielded no evidence related to her disappearance. The investigation had been temporarily halted due to severe weather conditions but has now resumed with renewed determination.
The timeline of events indicates Graf was last seen during the early hours of December 12 after visiting the Roxy Downs hotel. Surveillance records show her departing the establishment at approximately 12:19 AM in her white 2012 Ford Territory (registration S254BCX). Shortly afterward, she reportedly collided with a kangaroo near Andamooka Township but continued her journey to visit a friend.
Her final confirmed sighting occurred around 2:00 AM on Dunstan Drive. Friends discovered her vehicle approximately ten hours later, positioned on a dirt mound near Blue Dam, east of Andamooka. The abandoned car showed no immediate signs of what might have transpired after she was last seen.
Law enforcement officials are now preparing to search numerous mine shafts located east of Andamooka, considering the area’s mining history and potentially dangerous abandoned sites. The community remains on high alert as authorities urge anyone with information to contact Crime Stoppers at 1800 333 000.