Police believe there is a high probability Western Australian girl Cleo Smith is the victim of an abduction, as they work to eliminate everyone as a suspect.
Acting WA Police Commissioner Col Blanch told radio station 6PR that officers remain open-minded as they speak to people, including those who were at Blowholes Campsite on the morning the four-year-old girl was reported missing.
This morning Mr Blanch was asked by host Gareth Parker if he believed Cleo was removed from her tent and abducted on October 16.
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"That's probably our highest probability thinking of what's occurred to Cleo," he told 6PR.
"We are still very open-minded in this investigation.
"One of the important parts of any investigation like this is to go through each and every step thoroughly."
Mr Blanch said police wanted to "eliminate everyone at the campsite to see what their movements were, why were they there (and) where did they go afterwards".
"That is a normal part of an investigation and we want to make sure we do it properly because I think the public and certainly the parents deserves answers as to what happened to Cleo," he said.
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https://omny.fm/shows/6pr-breakfast/acting-police-commissioner-gives-update-on-cleo-sm/embed?style=cover
Police are also desperately trying to speak to a driver who was seen heading away from the campsite 10 days ago.
The car was seen heading south along Blowholes Road, from the Blowholes Campsite where Cleo's family were camping, and towards Carnarvon.
CCTV from homes and businesses along the Coastal Highway is currently being reviewed by officers in an attempt to find the car's registration or driver.
"That's what the team have been focused on in relation to the CCTV along the entire highway… to corroborate what was witness observations of a vehicle at that time on the highway," Mr Blanch said.
"If anyone saw car movements at or around 3am heading south on the coastal highway from Blowholes Road, that is really one of our investigative areas of focus.
'It's not to say that we're saying that that is the person, but certainly driving around at 3am coming out of there would pique our interest as to who it was and what they were doing there and maybe what they saw themselves."
Prime Minister Scott Morrison revealed yesterday the Australian Federal Police (AFP) is using secret technology in the search.
"We certainly can't talk about that on air but the AFP are there, they've joined that process," Mr Morrison told 6PR's Oliver Peterson.
"I'm very pleased to say they're helping in every way they possibly can."
Mr Blanch said there is a "massive police team" at the Blowholes campsite in Carnarvon still working every day.
"I think it's important we all have hope that we can bring Cleo home," he said.
"The team are focused on finding Cleo, getting the evidence and doing the best we can to solve this."
The WA Government is offering a reward of up to $1 million for information that leads to the location of the missing four-year-old girl, which has led to reports of bounty hunters in the area.
Mr Blanch said while the land, sea and air search to investigate a theory that Cleo wandered off has concluded, "there's still a lot of land out there to cover".
"I just ask that people don't put themselves in any danger in doing so," he said.
"I think people whether it's for the money or whether it's just to do the right thing and help find Cleo, people are up there trying to find (out) what happened."
Police return to family home
Meantime, police have attended the family home of Cleo Smith for a third time today.
It comes after officers conducted a second search of the family home yesterday, leaving with what appeared to be at least one brown bag of evidence.
The eight-hour forensic search, which included a heavy focus on the backyard, was a routine part of the investigation which has now entered its 12th day, police said.
After a forensics team arrived in the early afternoon, escorted inside the home by Cleo's stepfather, Jake Gliddon, 9News footage later showed an officer leaving the Carnarvon home with an evidence bag.
Mr Blanch said the visit was "standard practice in any investigation".
"We must do a thorough investigation," he said.
"The parents have been nothing but helpful, we've worked very closely with them. They've let us into their home, they've let us into their car, their phones, everything.
"That is a normal part of the investigation and we must follow it through thoroughly.
"Our job is to eliminate everyone that was at that campsite and that is a systematic and thorough approach at doing so in any investigation. That really is the focus of this investigation at the moment."
The second search stretched well into the night, with 9News reporter Mia Egerton-Warburton saying police "paid particular attention" to the backyard, going over it with spotlights.
"I guess we just hold hope that there's something there that they can find that will help," Cleo's mum, Ellie Smith said earlier this week, when asked about the forensic search.
"I mean if it's someone that's has been watching for who knows how long, hopefully they pick something up that will help."
On Saturday, police were closely examining a brown front fence of the property and the backyard.
"We know now they were looking for any signs of potential stalker but that theory has since been dismissed," Egerton-Warburton told Today.
Police are still searching for a car seen leaving the area where the four-year-old went missing on October 16.
Cleo vanished from her family tent at the Blowholes Campsite, , around 70 kilometres north of Carnarvon.
Ms Smith, Cleo's mum, said she last saw her daughter at 1.30am, when the young girl woke up and wanted a drink of water.
By 6am, Ms Smith said Cleo had gone.
Cleo's sleeping bag was also missing and a zip on the tent was raised higher than the small girl could have reached, raising fears she had been abducted.
Days of searching along the coastline and stark scrubland have yielded no clues as to what happened.
Police have no suspects and no major leads, at least publicly.
They are now trawling through CCTV trying to find anyone leaving the area at the time of her disappearance.
In an effort to track a potential abductor, police have requested CCTV from a 1000 kilometre radius from Carnarvon, a small town of 4400 people on the WA coast.
