Hunt for suspect in NSW beach stabbing

Detectives have released an image of a man wanted for his alleged involvement in the fatal stabbing of another man in broad daylight at a NSW mid-north coast beach.

The 30-year-old victim was found with a deep wound to his chest about midday on Friday at Lighthouse Beach and died several hours later in hospital.

A manhunt is under way for Ben Black, 32, who was last seen about 12.40pm on Friday at Rushcutter Way, a kilometre from the beach.

Police have released an image of Black and have urged the public to not approach him but call triple zero immediately if he is sighted.

A NSW Police spokeswoman told AAP on Sunday there had been no sightings of him to date.