Jamie White, aged 42, was last seen at camping grounds along the Allyn River at Upper Allyn, about 11pm on Monday, 25 May.

After he could not be located or contacted, officers attached to NSW Police Force commenced inquiries into his whereabouts.

Jamie is described as being of Caucasian appearance, about 175cm tall, with a thin build, black hair and black facial hair. He was last seen wearing all black winter clothing.

Police say he is known to frequent the Branxton area.

Anyone with information about Jamie’s whereabouts is urged to contact Hunter Valley Police District or Crime Stoppers on 1800 333 000.

Information can also be provided online via Crime Stoppers NSW.