A man has been reported missing after failing to return from a tramp in the Tararua Ranges.
Police said the 60-year-old man had gone on a four-day tramping trip on January 31 and was due home on Sunday.
A search and rescue (SAR) operation was launched on Tuesday morning, where teams have been conducting a ground search and checking tracks and huts.
Today, the New Zealand Defence Force (NZDF) announced it has joined the search following a request from police.
Air Commodore Tim Walshe said a Royal New Zealand Air Force NH90 helicopter was flying search and rescue personnel to the Tararuas this afternoon.