No trace has been found of a hearing-impaired woman missing in the Waikato-King Country area since Monday.
Kim Louise Richmond was last seen leaving her Wharepapa South farm driving south in a silver Ford Ranger ute.
Police said they have searched all rural roads around the farm and nearby areas, including Lake Arapuni.
They said the 42-year-old's disappearance is out of character and they are concerned about her well-being.
She is described as being of thin build, about 162cm tall, with an olive complexion and dark hair.
She was wearing a Highlanders rugby jersey, blue jeans, a brown leather jacket and brown boots.