The latest search efforts to find a missing South Australia mother has finished with no new clues found after 1000 mine shafts searched.

Major Crime detectives have completed the latest search effort at Andamooka, more than 500km from Adelaide, as part of the investigation into the disappearance of Trisha Graf.

Police said officers from Major Crime, STAR Group, Mounted Operations and SES volunteers “searched and cleared a total of 1000 mines as well as draining and clearing three dams.”

No evidence was found, but investigators said they have not ruled out returning to the area as the case continues.

The 41-year-old was last seen at the Roxby Downs Hotel at 12.19am on Friday, 12 December 2025.

She left shortly afterwards in her white 2012 Ford Territory (SA registration S254BCX) with a friend, travelling towards Andamooka.

Police said Trisha collided with a kangaroo just outside the township before continuing into Andamooka, where her and a friend visited a home in the north‑west of the town.

Police were told that Trisha left just before 2am to drive home and was last seen on Dunstan Drive.

Just after midday the same day, her partner and a friend found her Ford Territory “perched on a dirt mound” near the Blue Dam east of Andamooka

Initial ground and aerial searches — followed by further efforts from police, SES and local community members — failed to locate her.

Additional searches by Far North police, Port Augusta officers, Missing Persons investigators and PolAir have also been unsuccessful.

Anyone with information on Trisha’s movements or whereabouts is urged to contact police.

SOURCE: https://7news.com.au/news/extensive-1000-mine-search-ends-with-no-breakthrough-to-find-missing-south-australian-trisha-graf-c-22379820