The latest update in the disappearance of Samantha Murphy, over a week into the search.

On Sunday morning, Samantha Murphy laced up her shoes and headed out for a run.

Murphy, a 51-year-old mother-of-three, left about 7am on February 4 for Woowookarung Regional Park near her home in Ballarat East, an area she ran in almost daily. 

But this time, she never returned.

Police said the 51-year-old's disappearance is out of character, with the search for her now extending into its second week. She was last seen wearing black half-length leggings, a maroon or brown singlet and an Apple Watch.

Police are asking residents in the area to review their CCTV footage from between 7:00am and 11:00am on February 4 for sightings.

Search 'scaled back' after a week of no leads.

Six days after Murphy's disappearance, police scaled back the search for her but said the investigation continued.

"The investigative stage of the investigation continues and as any new information comes to hand identifying areas of interest, the search will be scaled up.

"Police continue to be in regular contact with Samantha's family regarding the developments of the search and the status of the investigation."

Volunteers have continued to search through the local area.

Victoria Police's Missing Persons Squad, which took over the search on Friday, renewed calls for any footage taken in the area around the time of Murphy's disappearance, including from home CCTV and dash cams.

"Even if the footage does not depict Samantha, detectives are keen to review all footage in the areas between 7am and 7pm on Sunday, 4 February," the force said in a statement.

"Police previously urged everyone in the Ballarat East and Mount Helen areas, particularly around the Canadian Forest, to check their CCTV for any possible sightings over the past six days however would now like to collect all footage.

"Despite extensive searches in the area over the past six days, no sign of Samantha has been located."

A message from Samantha Murphy's family.

On February 8, Murphy's daughter Jess Murphy spoke through tears to media as she pleaded for clues as to what happened to her mother.

"Mum's a really strong woman and she's far too determined to give up this fight," she said.

"I know she's out there somewhere, so if you could please continue to search for her to give us something to work with, we would really appreciate it."

Her husband also added: "People just don't vanish into thin air" and also appealed for any information.

"Whether it be any little thing that you might think is relevant, just call the police and let them know. It'll give us a bit of peace of mind, some hope."

Jess also delivered a message to her mother: "Mum, we love you so much and we miss you and we need you at home with us," she said.

"I can't wait to see you and give you the biggest hug when I do, and to tell you off for giving us so much stress."

Second runner comes forward following CCTV bungle.

Earlier in the investigation, police released CCTV footage purporting to show Murphy's last movements, running past a house about 16 minutes after she left her home.

But on Thursday afternoon, Victoria Police said they no longer believed it to be her.

"A member of the community has come forward and identified themselves as the person depicted running," police said in a statement.

"For that reason, the footage will no longer be relevant to the search for Samantha."

Police say found items are not relevant to the search.

Earlier in the search, emergency service vehicles temporarily blocked an entrance to the Woowookarung Regional Park, across the road from Murphy's home, after items were discovered in bushland on Wednesday.

However, after assessment, police said the recovered items were not believed relevant to the search.

"The public should not speculate."

On Thursday, Chief Commissioner Shane Patton urged members of the public to stop drawing their own conclusions in Murphy's case. 

"The public should not speculate. They shouldn't be going on social media and shouldn't be speculating on what they think has, or hasn't, occurred," he told 3AW.

"This is very early days, this is traumatic for the family and friends of Samantha.

"I would just urge everyone just to leave it to police to work through."

It came after a member posted a message on behalf of Murphy's family in a Facebook group set up to aid the search.

"We are holding up as strong as we can emotionally and physically. We pray that Samantha comes home soon safe and sound. We all miss her dearly," the member shared on Wednesdy evening.

"We have worked with authorities to give any information and have/had tried all techniques to find her that's possible currently."

The post also addressed online commentary about Murphy's husband, Mick.

"For those questioning Samantha's husband, you need not worry. He is in more pain than anyone and would be the last person to suspect in any of this," the member wrote.

On Wednesday, Mick Murphy told the Herald Sun he was not worried about the commentary as he didn't look online.

When asked if he wanted to clarify anything, he said police had advised him not to say anything.

Samantha Murphy. Image: Victoria Police.

Murphy's daughter and a family friend had also responded to various comments on social media.

"You have no idea what you are talking about," her daughter wrote. "Be quiet and think before you post."

Murphy's friend responded to "trolls".

"I'm just trying to defend people who are being hurt by malicious comments," she wrote.

"A giving person."

Murphy's friend and director of the Ballarat Centre of Music and Arts Paula Heenan told the Herald Sun Murphy was a very generous person, and her community remained hopeful.

"She will do anything for anybody, she's been a good parent helper," Heenan said.

"She adores her children, absolutely adores her children... There's a lot of very concerned people looking for someone we love very much."

Local Trudi Hooper visited Buninyong Police Station where officers had affixed highlighted maps to a whiteboard, showing where the public could aid the search effort.

The local mother joined other neighbours poking through bushland in the hopes of finding a phone, watch, earphones, or any of Murphy's belongings.

"It's horrible, It's too close to home," Ms Hooper told AAP.

"How can you just go for a run in the morning and not come home? It doesn't make sense.

"I was hoping that I'd get out here and they'd tell me it has been called off and that she'd been found already."

Another worried neighbour told Daily Mail Australia Murphy's disappearance was a shock for the community.

"It's just such a worry because you just don't know what has happened. Is there someone out there? We just don't know," she said. 

-With AAP.

This article was originally published on February 7 and has been updated.

Feature image: Victoria Police.