A search and rescue operation is under way in Queenstown after an Australian tourist failed to return from a day walk on Ben Lomond.

The mother of missing South Island teen Yuri Santana says her heart is "bleeding" for the 17-year-old.

The police have called off searches for Yuri Santana, eight days after he was last seen, but his parents haven't given up hope.

Kim Louise Richmond was last seen at her home in Arohena on July 31, before leaving the address in a silver Ford Ranger ute.

The family of Luke Cochrane has issued a statement after a body was found in a search in Whitianga.

Police searching for missing teenager Luke Cochrane in the Coromandel have cordoned off a street after finding a hat believed to be his.

Police divers are still scouring a section of waterway opposite the Whitianga Fire Station for any clues in the search for Luke Cochrane.

Lucas Cochrane's Mum is appealing to anyone who may have seen him to get in touch with authorities

Catherine Tamati last heard from her son, Lucas Cochrane, on Saturday morning.

The parents of missing teen Luke Cochrane have been driving around Whitianga along with 12 other friends and family members scouring the town for any sightings.

Police are appealing for information about the whereabouts of a teenage girl who has not been seen for the last three months.

A missing 84-year-old has been found.

Palmiro Macdonald, also known as "Powser", was picked up from his home in Levin on March 23 by an associate driving a 1994 Mercedes Benz. He has not been seen since.

Police are appealing for information about the whereabouts of an elderly man who has gone missing from a Whangarei rest home.

The search for a missing 18-year-old lost off the New Plymouth coast has continued today.

A man missing from a hospital with a life-threatening head injury has been found.

A 12-year-old boy who went missing last night after not returning home has been found safe and well.

Police hold concerns for an elderly woman missing overnight in South Auckland.

Alpine rescuers search near Mount Bovis for the man, dressed only for a day tramp, who has been missing since Saturday.

The family of a missing Marlborough boatie say somebody is accessing his personal Facebook account, more than two years after he vanished.

Searchers are continuing to look for two missing crewmen from a fishing vessel lost off Hobart with a New Zealander on board.

A woman lost in the forest near Foxton Beach has been found safe and well.

Senior policeman admits reporting boat as stolen was 'means to an end' to access cellphone records of missing man Kerry Blair.

There has been a heart-breaking discovery in the search for a missing Kiwi and his three friends after they disappeared while on a fishing trip off Hobart.

Police are appealing for information about the whereabouts of Christchurch teen who has not been in touch with his family for 24 days.

Two children who sparked a major police search after they stole away from a Tuakau home in the dead of night are now believed safe with family.

Police are appealing for any sightings of a Hawke's Bay man who's not been seen all weekend.

A woman with a mental impairment has been missing for two days and police now say they hold grave concerns for her.

The search continues for two siblings who haven't been seen since Monday night when they left a rural South Auckland property with a large suitcase.

Watch: At a police conference police said they were still not sure why the siblings had fled the property.