Western Australian Police want to speak to the driver of a vehicle seen leaving the campsite where 4yo Cleo Smith went missing from her family’s tent. They say it was seen at about 3am on Saturday, 16 October, and they want “to establish who they were and what they were doing at that time.” On Saturday, a search for fingerprints and other evidence on the outside of the family’s home in South Carnarvon was launched. Authorities say there is the possibility that someone kept an eye on the family prior to Cleo’s disappearance, but they have no evidence to support the theory at this stage. Police Commissioner Chris Dawson renewed his call for information yesterday. “We do believe that someone knows something. Cleo just can’t simply disappear from that tent without a 3rd party, another person or persons knowing,” he said.