The Smith family home is being scoured as police search for signs missing Cleo may have been taken by a visitor to the home or some kind of stalker.
Detectives visited the family home in Carnarvon on Saturday, dusting the outside and combing the house for any evidence they could find, PerthNow reports.
WA Police said they have not ruled out any possibilities. Cleo was taken from her family's tent at the popular Blowholes site, on WA's northwest coast, in the early hours of last Saturday morning.
It has been confirmed the zipper on the tent was found open to a height the four-year-old could not have reached, seemingly ruling out the possibility she wandered off on her own. Her red and black sleeping bag is also missing.
Her mother Ellie Smith has said she woke around 6am to discover Cleo was missing from the family's tent.
Investigators have spoken to up to 20 registered sex offenders in the Carnarvon area, but there are no suspects.
Detective Superintendent Rob Wilde said a search of the 1000km radius of the campsite has turned up nothing. Authorities spent more than a week searching for signs of Cleo.
“It leads us to believe that she was taken from the tent," Det Supt Rob Wilde said.
Det Supt Wilde said authorities were keeping an open mind in relation to whether Cleo may have been taken by someone known to her.
Police have not ruled out the possibility Cleo may have been taken across state borders.
Police have also launched a fresh appeal for any dashcam or CCTV footage recorded last weekend within a 1000-kilometre radius of the Blowholes campsite but only as far south as Lancelin.
Detectives are "particularly interested" in motel check-in and communal areas, service stations, fast food outlets and bakeries, truck stops and free camping areas, children's clothing stores, pharmacies and cosmetic stores, and camping stores.
Community service announcements appealing for information regarding Cleo's disappearance are also being broadcast on radio stations.
A $1 million reward has been offered by the WA Government for any information which might lead to Cleo being found.
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