Cleo Smith abduction and JonBenet Ramsey

Australian police are investigating whether another person may have been involved in the abduction of four-year-old Cleo Smith, who was rescued from a stranger's home last week.

Cleo was missing for 18 days after she vanished from her family's camping trip in Western Australia on 16 October.

Her disappearance sparked a massive search that ended in police finding the girl in her hometown of Carnarvon.

Terence Darrell Kelly, 36, has been charged with kidnapping offences.

He was flown to a maximum security prison in Perth, 900km (560 miles) south of Carnarvon, last Friday.

But lead detectives in the case returned to the small coastal town on Monday.