Police discovered the six-year-old's body late on Thursday

The six-year-old was last seen outside his home at Wallangra, at about 4pm on Wednesday.

Officers from New England Police District were notified of his disappearance and an extensive search involving dozens of community members, Polair, police, Rural Fire Service and SES volunteers, continued throughout the night and today.

The child's body was located by police divers in a dam on the property at about 3.15pm today (Thursday).

A report will now be prepared for the coroner.

AT LEAST 50 community members and the local school have joined the search to find missing six-year-old Braxton Plant.

The boy was last seen at his home on Wallangra Road at Wallangra about 4pm on Wednesday.

Helpful community members have combed the dense bushland property alongside 25 Rural Fire Service and State Emergency Services volunteers in a desperate attempt to find the boy, who has Down Syndrome and is non-communicative, before dark.

Ashford Central School principal Ben Delanty said the family and Braxton are in his thoughts and prayers.

"One of our gorgeous students is still missing despite the courageous dedication of so many in our community since approximately 4:30pm Wednesday afternoon," he said.

"If you are able to help the NSW Police and our SES please attend the briefing at 8am, 9km out of Ashford on the Wallangra Road."

Anyone who may have information about Braxton's whereabouts are urged to contact New England Police or Crime Stoppers on 1800 333 000.

Police are appealing for public help to find a boy missing in the New England.

Braxton Plant, aged six, was last seen at his home on Wallangra Road, Wallangra, about 4pm on Wednesday.

Emergency services were contacted about 7pm with New England police launching an investigation into Braxton's whereabouts.

Police and family hold serious concerns for his welfare as Braxton has Down Syndrome and is non-communicative. The surrounding area is made up of dense bushland and dams.

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When he was last seen by family members, Braxton was playing in the mud and not wearing any clothes, police said.

A coordinated land search has been conducted and will continue today, including assistance from Polair.

Investigators urge anyone who might have information about Braxton's whereabouts to contact New England Police or Crime Stoppers on 1800 333 000.

More to come.

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