How note on car led to miraculous find after three people vanish in outback

The search will resume for two people missing in central Australia for almost two weeks after their travelling companion was found alive.

Claire Hockridge, 46, Tamra McBeath-Riley, 52, and Phu Tran, 40, had been missing from Alice Springs since November 19 when they told family and friends they were going for a drive.

They failed to return that night as planned. 

Tamra McBeath-Riley (left) has been found while friends Phu Tran and Claire Hockridge haven't been seen since November 19. Source: NT Police

After nearly two weeks, Ms McBeath-Riley was found on Sunday after police discovered the trio's vehicle which had become bogged in a river bed.

Ms McBeath-Riley and her partner, Claire Hockridge, are locals of Alice Springs while Phu Tran lives in Adelaide.

She was taken to Alice Springs Hospital to be treated for dehydration and exposure, but her companions are yet to be located. Temperatures in the area soared well above 40C last week.

The vehicle was spotted during an air search after a station worker saw tyre tracks and informed police.

It was in an area that had not been covered in the search.

A note on the vehicle dated November 21 said Ms McBeath-Riley had gone north and Ms Hockridge and Mr Tran had gone west to seek help.

"She [Ms McBeath-Riley] has travelled about 1.5 kilometres from the vehicle and was in an area where there was some water, so sensibly she appears to have stayed where the water is and has been drinking that and that's probably what's kept her going until we've been able to locate her," Superintendent Pauline Vicary told the ABC.

The air search is set to continue Monday for her companions who are still missing.

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