Western Bay of Plenty Police are urgently seeking a woman in a car believed to be in the company of two six-year-old girls.
Police say Lisa Tracey Mills, 47, is believed to be driving a white 2010 Mercedes-Benz GL SUV.
The car's registration number FQS965.
Anyone with any information regarding Ms Mills whereabouts are asked to contact Tauranga Police Station on 07 577 4300.
Alternatively, information can be provided anonymously to CrimeStoppers on 0800 555 111.