Police are appealing for information after a woman with Alzheimer's went missing on Waiheke Island.
Sylvia Henley was last seen on Saturday morning.
Her family and police are concerned for her wellbeing and say she may be confused.
She may be wearing a light blue dressing gown and slippers, police say.
Search efforts on Saturday have been unsuccessful in finding Ms Henley.
Anyone with any information is asked to contact police on 111.