Family and friends of Felicity Shadbolt, whose body was found in Western Australia's Pilbara region on Thursday, will now await the results of an autopsy to find out what happened to the mother of two.

Key points: Post-mortem to be conducted Monday as police conclude on-ground work in Tom Price

Post-mortem to be conducted Monday as police conclude on-ground work in Tom Price Follows discovery of Felicity Shadbolt's body 500m from caravan park in the town

Follows discovery of Felicity Shadbolt's body 500m from caravan park in the town Mother-of-two had been missing since about 11:30am on Sunday

Mother-of-two had been missing since about 11:30am on Sunday Police are appealing for anyone with relevant information to come forward

Homicide squad and forensic officers will depart Tom Price today after completing their on-ground investigations.

A post-mortem examination will be conducted in Perth on Monday and police will prepare a report for the coroner.

Ms Shadbolt was last seen alive on Sunday about 11:30am when she told friends and family she was going to go for a run at Mount Nameless, some 10km from Tom Price.

Ms Shadbolt's body was found about 500 metres from a caravan park in Tom Price after a huge search that was hampered at times by extreme weather and difficult terrain.

Police appeal for information

Pilbara District Superintendent Paul Coombes said the death would impact the whole community.

"Obviously a tragic event of this nature impacts everyone, and especially in small rural communities," he said on Thursday.

"The community of Tom Price and Paraburdoo have been outstanding in their support, and their efforts in assisting us with the initial search and the finding will have a great impact on everybody involved."

Superintendent Coombes called on the community not to speculate as inquiries continue.

"Obviously the family and friends of Felicity need to be considered in this as well, and any rumour and innuendo doesn't help," he said.

"If anyone has any information that they believe is relevant, they are encouraged to contact us here at Tom Price Police or call through to the Crime Stoppers number."

Tragic end to search

A police spokesman confirmed late on Wednesday night that they believed they had found Ms Shadbolt's body.

Police had been searching on foot and with the assistance of aerial spotters, and could be heard by nearby caravan park residents as they investigated.

One resident said she could hear searchers calling out to each other from her caravan, as they tried to assess the terrain, with one person yelling "she's down here".

The alarm was raised when Ms Shadbolt, or Flik, as she was known to family and friends, failed to return home at a specified time.

Police and SES workers during the search for Felicity Shadbolt, near Mount Nameless in Tom Price. ( Supplied: DFES WA )

Community rallied during search

The search covered more than 70,000 hectares from the air, with police also aided by members of the local pony club on horseback.

Temperatures on Monday and Tuesday had climbed above 40C, and police had temporarily suspended the on-foot search on Monday afternoon because of the heat.

Scores of volunteers, police and SES workers searched in scorching conditions and across rough terrain. ( Supplied: DFES WA )

The search was also hindered by afternoon storms, which affected the two aircraft which were using infra-red technology to look for any heat signals on the ground.

Drones were also deployed to search inaccessible land around the town.

Police had also unsuccessfully attempted to pinpoint Ms Shadbolt's location through her mobile phone, which was ringing out until Monday, when all calls went straight to voicemail.

Tom Price, which is home to about 3,000 people, opened its local community centre all week so locals could gather and support each other.