Police in Auckland say it is possible someone is caring for - but not reporting - a missing rest home patient.
Siafua Faleaupu, 58, has dementia and has been missing for nearly three weeks.
Mr Faleaupu , a resident of Christina Rest Home in Mangere, has a history of going missing, and has been found as far as Avondale nearly 20km away in the past.
His last reported sighting was on Friday in Otara.
The man's family say the longest he has been missing previously is three days.
Detective Senior Sergeant Darrell Harpur says he hopes someone could be looking after Mr Faleaupu, given the time he has been missing.