Police are continuing their search for a man who has gone missing on the state's Mid North Coast.
Gregory Gallen, aged 31, was last seen leaving a home at Lake Cathie about midday on Tuesday, January 7.
A spokesperson from NSW Police said the large scale search is taking place at Lake Cathie.
The man's vehicle was found near the sports field at Lake Cathie and the NSW Police spokesperson said the search is being conducted on land and at sea.
Officers from Mid North Coast Police District, Police Dog Unit, PolAir, trail bikes, Marine Rescue and SES volunteers are involved in the search.
The spokesperson from NSW Police said information from the public and family members has assisted in their search.
Police and family hold grave concerns for Gregory's welfare, as he has not been seen or heard from since Tuesday.
He is described as being of Caucasian appearance, about 185cm tall with a solid build, brown hair, unshaven and blue eyes.
Anyone who has seen Gregory, or knows of his whereabouts is urged to contact police immediately.
Anyone with information about this incident is urged to contact Crime Stoppers on 1800 333 000 or visit https://nsw.crimestoppers.com.au