The search for items belonging to missing woman Celine Cremer, who vanished in the state's rugged northwest two-and-a-half years ago, entered a second day on Saturday.
But Tasmania Police announced the search had been paused by the end of the day.
The team of six search and rescue experts focused on an area downstream from where human remains and other items were located on Friday.
Commander Nathan Johnston said while it was disappointing not to find further items on Saturday, the discoveries made on Friday "remain significant".
"At this stage, the search will not resume tomorrow, with a plan to reassess the situation," he said late on Saturday.
It could take as many as three weeks before learning whether the bones, jacket and other items belong to Ms Cremer.
The operation, led by police, was about 2km from Philosopher Falls near Cradle Mountain, the last location the 31-year-old visited in June 2023.
Police searched a section of the Arthur River near Waratah on Friday after a bushwalker discovered remains, including a jawbone, earlier this week.
Ms Cremer was reported missing by her family on June 26, 2023, sparking a major search involving police and SES ground crews, specialist swift water rescue personnel, drones and a helicopter.
It's believed she set off on a walk and her car was found in the falls car park a day after police were alerted to the concerns for her welfare.
Cmdr Johnston confirmed a polar fleece jacket, likely Ms Cremer's, was among the items found by officers on Friday.
He said a bra and a thermal top had also been discovered, along with more bones.
"Whilst further forensic examination will need to be conducted to confirm the identity, due to the nature of the items located, and the location, we believe they are Celine's," Cmdr Johnston told reporters.
Ms Cremer's mother Ariane Cremer took to social media to share information with friends.
She informed them she had been contacted by police who indicated it might take "a lot longer than three weeks" to confirm the identity.
Responsibility will ultimately fall to the state coroner.
A bushwalker involved in a privately led renewed search for Ms Cremer initially discovered human remains on Wednesday.
They are being treated as a separate investigation until a full gamut of forensic tests can be conducted.
The bones will be examined by a pathologist, anthropologist and odontologist and undergo DNA analysis.
The same search group discovered Ms Cremer's phone in December.
"We recognise how significant these developments are for Celine's family, and we are ensuring they receive updates as sensitively and promptly as possible," Cmdr Johnston said.
