Police have released the name of a Rotorua fisherman who has been missing since his boat capsized four days ago.

Jason Elijah Shane Manuka Lines, 24, was last seen by rescue helicopter personnel clinging to the overturned 4m dingy after it flipped while travelling over the Bowentown Bar, south of Waihi Beach on Monday night.

Despite an extensive police-led search, Lines has not been found.

Search teams, including the Police National Dive Squad and Royal New Zealand Navy were today completing their search of the area.

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Police said Lines' family has been notified of the search progress to date and their thoughts were with them at this time.

Police will continue to assess new information as it comes to hand.