Trisha Graf, aged 41, has been missing for nearly a month, last spotted in the vicinity of Roxby Downs. Her Ford Territory was discovered deserted to the east of Andamooka on the same day she disappeared.

Graf had spent some time with friends at the Roxby Downs hotel, leaving around 12:30 a.m. on Friday, December 12.

During their journey home, a kangaroo collided with the vehicle a short distance from Andamooka township.

Despite the accident, Trisha and her companion proceeded to Andamooka, where they stopped at a residence in the town’s northwestern region.

At approximately 2 a.m., Graf set out to travel a brief distance to her home. She was last observed driving along Dunstan Drive.

Her car was found abandoned near Blue Dam just after midday. 

“This is highly unusual and particularly out of character for her,” South Australia Police Detective Superintendent Darren Fielke said.

“The dam has been searched by police divers, polair has been involved in aerial searching and we’ve also utilised specialised drone equipment,” Fielke said.

“Police have spoken to a number of people and in Roxby Downs who have assisted piecing together the movements of Trisha.”