The number of searchers looking for an elderly man in Hamilton missing since Sunday night has grown.
Trevor Smith, 70, from Kawhia suffers from type 2 diabetes and dementia and was last seen by relatives at the entrance to Waikato Hospital.
Forty police and Land Search and Rescue volunteers have searched the hospital grounds and around nearby Hamilton Lake.
Police have concerns for Mr Smith safety as his illnesses could add to his sense of disorientation.
Mr Smith was last seen wearing a distinctive lime green Vodafone Warriors rugby league jersey, dark trackpants, white sandshoes and a grey cap.