Missing WA toddler Cleo Smith wasn't stalked before suspected abduction as cops ...

Police have dismissed fears missing toddler Cleo Smith was stalked at home before she disappeared from a campsite 50km away.

Forensic experts dusted her home in South Canarvon, in Western Australia, for fingerprints on Saturday as part of the hunt for the missing four year old who vanished from her parents' tent.

But detectives insisted the exercise was just routine in their investigation into the presumed abduction and was not related to any allegations of stalking. 

'We do that as part of a thorough investigation but that's not indicating they've been stalked, nothing like it,' Detective Superintendent Rod Wilde told The West Australian.

'In actual fact, if she has been taken, it's more likely to have been a random event. There is no indication and no evidence that anyone was being stalked.

'We just want to reassure the community that we do not believe that is the case in this instance.

'It was predominantly to see if there had been any trespass or anything like that, but nothing of interest has come from that.

'It's just part of a thorough investigation and something that we will do in these cases. It's to gather information and eliminate certain aspects of an investigation.'

New witnesses told police they saw a car and heard screeching tyres at the Blowholes Campsite, 50km north of Canarvon, where Cleo vanished. 

Superintendent Wilde said the car was seen about 3am on October 16 when Cleo went missing.

The car was turning south off Blowholes Road, near the area Cleo's family was camping, and headed for Carnarvon. 

The timing of the car sighting coincides with evidence from other campers that they heard the the sound of screeching tyres rapidly leaving the campsite about 3am.

Superintendent Wilde said the evidence was 'credible' and the witnesses only came forward after learning of the possible abduction of the child, having not thought their sighting of the car was significant at the time.  

'Obviously at that time when the people observed it, it wasn't anything of great significance,' he said.

'They just came forward after hearing about Cleo and the news and realised the significance.

'Fortunately, they've come forward and passed that on to us so we are keen to speak to the person who was driving and anyone who was in that vehicle to speak to us.'

The new witnesses were travelling north on the North West Coastal Highway on their way to work when they spotted the mysterious vehicle leaving the camping ground. 

Unfortunately, they were unable to give a description of the car or how many people were inside as it was too dark.

'We want the person or persons who were in that vehicle to come forward and contact police,' Superintendent Wilde said.

'We want to know who they were and what they were doing. 

'The time is not exact but we believe it to have been between 3am and 3.30am. We believe it was a passenger vehicle, not a truck.'

Another major piece of evidence police received is Cleo's voice being heard on CCTV footage near the beach shacks a day before she disappeared.

The development is significant because it rules out any suspicions the child was never brought to the camping ground by her parents. 

'It was just after they arrived, it's motion-sensitive so it was by [their vehicle],' Superintendent Wilde said.

'It's very limited… we've reviewed that and we believe it's Cleo's voice that's heard on the CCTV.' 

Although detectives acknowledge young Cleo could be 'anywhere' by now, they believe it's more likely she's still somewhere in WA. 

'It's always possible but it's more likely that if someone has taken Cleo that they would still be within WA,' Supt Wilde told the West Australian. 

'If they had crossed the border, it would imply that someone from the Eastern States had committed the offence, when it's more likely that — if that is what's happened - the offender would be from here.'

It was originally thought the little girl had simply wandered off towards the ocean or the rugged scrublands nearby, but detectives are now convinced Cleo was abducted by a brazen child predator. 

The leading theory is that she was snatched while sleeping beside her mother Ellie Smith and step father Jake Gliddon in a tent at the remote camping site. 

Her parents woke up to find her missing along with her missing along with her adult-sized red and grey sleeping bag, suggesting she may have been carried out and loading into a vehicle in the dead of night.