UPDATE: Three young children missing in NSW have been located some 500 kilometres from where they were last seen after a desperate police search.
The children, aged 9, 8 and 5 were last seen on Lakeview Road, Umina Beach, on Saturday morning, prompting alerts and calls for help from authorities.
"Following inquiries, including a public appeal and an SMS geo-targeting alert, officers attached to the Traffic and Highway Patrol Command stopped a vehicle on the Pacific Highway, south of Emerald Beach at Coffs Harbour, about 7.30 this morning," NSW Police said in a statement on Monday.
"The children were located in the vehicle in the company of their father."
Inquiries are continuing.
EARLIER: Police have launched a statewide appeal to help find three missing children from the NSW Central Coast area.
Nine-year-old Geordi Finlayson-Walker, his eight-year-old sister Sahara and their five-year-old sister Havana were last seen on Lakeview Road in Umina Beach just around 11.15am on Saturday.
It’s believed they may have been taken by their father, 58-year-old Anthony Walker.
The alert was raised when the children failed to return home, sparking the Brisbane Water Police District to launch an investigation.
Officers are pleading with the public to keep an eye out for them or their father, who may be travelling in a white 2010 Toyota Aurion sedan, with NSW registration BNR-21J.
Walker is described as Caucasian, about 167 centimetres tall, of medium build with a fair complexion, brown hair and green/hazel eyes.
All three children are described as Caucasian with a thin build and fair complexion.
Geordi is about 125 to 130 centimetres tall and has blond hair and blue eyes.
Sahara is also about 125 to 130 centimetres tall with brown hair and green/hazel eyes.
Havana has light brown hair, blue eyes and is 105 to 110 centimetres tall.
Family and police hold serious concern for their welfare due to their age.
Police have since issued an alert through the SMS geo-targeting system for the Umina Beach area.
Anyone who receives a text from +61 444 444 444 is urged not to discount the message as a scam and help search for the missing children.
Those with any information about their whereabouts is urged to contact Brisbane Water Police District or Crime Stoppers on 1800 333 000.
Do you have a story tip? Email: firstname.lastname@example.org.