Police believe a woman, missing from a Waikato mental health facility was aided in leaving the centre by family members.
Finnesse Endonia Kairau has not been seen since leaving the Waikato Hospital's Henry Rongomau Bennett Centre yesterday with her sister.
Police said they had concerns for the safety of the 41-year-old, who was admitted to the centre on Monday.
Ms Kairau was described as a fair skinned Maori, of thin build and with long black hair.
She was wearing a black polar fleece sweatshirt and blue jeans.