The disappearance of a nine-year-old girl from a lavish property is now being investigated as a homicide after a boat and ute were seized by police.
Charlise Mutten was staying with her mother Kallista Mutten when she vanished on Thursday at a sprawling private wedding venue owned by the family of her fiancé, Justin Stein, who was interviewed by investigators on Saturday.
Charlise and Kallista, who live in Queensland, were on holiday in Sydney and were at the exclusive property dubbed Wildenstein by the Stein family at Mt Wilson in Sydney's Blue Mountains.
There is no suggestion the 31-year-old is in any way involved in the child's disappearance.
Investigators are now treating the case as a potential homicide, with extensive searches underway near the multi-million dollar property which is surrounded by dense bushland.
“We are very distressed,” a family source told the Daily Telegraph.
Charlise Mutten, nine, was staying with her mother Kallista Mutten when she disappeared on Thursday at a sprawling private wedding venue owned by the family of her fiancé, Justin Stein, in Sydney's Blue Mountains
The distressed mum Kallista Mutten was consoled by emergency workers on Saturday
NSW Police released two photos of Charlise as the search for her intensified on Friday. She is described as being of Caucasian appearance with brown hair (pictured, Charlise Mutten
NSW Police told Daily Mail Australia that 'all lines of investigation' remain open in the baffling case.
The girl was last seen on Thursday at the property, but she was not reported to police until 8.20am on Friday.
A full scale search began within hours and police now hold 'grave concerns' for her safety.
The missing girl is described as being 'of Caucasian appearance, between 130cm and 140cm tall, of thin build, with brown hair and brown eyes,' NSW police said.
'It is believed she was last seen wearing a pink top with a round neck collar, a black knee-length skirt and pink Nike thongs.'
Investigators are now treating the manicured 12-acre property, including the residential buildings on it, as a crime scene.
Police divers scoured a pond at Wildenstein, which is run by Justin's brother James Stein, on Saturday,
They also seized a white boat used on the property and analysed it for fingerprints.
The boat is also understood to be subject to ongoing forensic testing.
NSW Police divers spent hours searching a pond on the Wildenstein property at Mt Wilson on Saturday
Kallista Mutten's fiancé Justin Stein went to Penrith on Friday to speak with NSW police
