Breakthrough in search for missing mum who vanished in remote Outback South Australia

A renewed push to find a woman who went missing in a remote Outback opal mining community nearly three months ago has wound up in South Australia, but police have not gone away empty handed.

South Australian woman Trisha Graf, 41, was last seen driving along Dunstan Drive in Andamooka, about 610km northwest of Adelaide, about 2am on Friday December 12, 2025.

Investigators on Wednesday seized a vehicle of interest, which is set to be forensically examined.

Major Crime Investigation Branch, STAR Group, Far North and State Operations Support Branch officers and SES members examined 315 points of interest over a search conducted during the past two days.

Those search sites included mine shafts and disused diggings.

‘While no evidence was recovered during the ground searches, police have not ruled out returning to the area as the investigation continues,’ SA Police said in a statement.

An earlier search of a septic tank at a residential address in nearby Andamooka, the town where Ms Graf was living, also turned up no evidence.

On the night of her disappearance, Ms Graf was seen leaving the Roxby Downs hotel a short time after 12.19am with a friend.

SA Police renewed search efforts for Trisha Graf on Wednesday and Thursday
SA Police renewed search efforts for Trisha Graf on Wednesday and Thursday
The search for Ms Graf around Andamooka has finished but police found a car of interest
The search for Ms Graf around Andamooka has finished but police found a car of interest
SA Police earlier searched a residential septic tank (above) but found no evidence
SA Police earlier searched a residential septic tank (above) but found no evidence
Andamooka, population 250, is a desert opal-mining outpost in South Australia
Andamooka, population 250, is a desert opal-mining outpost in South Australia

She was driving a white 2012 Ford Territory, SA registration S254BCX.

Ms Graf struck a kangaroo a short distance from Andamooka but continued travelling to a home in the town’s northwest.

She left the property shortly before 2am to drive home and was last seen travelling along Dunstan Drive, Andamooka.

Her partner and a friend went searching for her around midday on December 12 and located her car, which was atop a dirt mound near Blue Dam, east of Andamooka.

The car was stuck and undrivable.

Anyone with information about Ms Graf’s whereabouts or her movements leading up to her disappearance is urged to contact Crime Stoppers.