Police are investigating allegations a woman was sexually abused 10 years ago by a still-serving police officer.
The woman, who now lives in Australia, laid a complaint with the Independent Police Conduct Authority in April, the IPCA has confirmed.
"We are seeking to speak to the complainant in order to gather further information on the allegations as reported in the media," a police spokeswoman said on Saturday.
"As police have the same privacy obligations as any other employer we are unable to comment any further," she said.
The woman alleges more than 10 years ago the police officer took advantage of her after arresting her partner on domestic violence charges.
"I was beaten for four hours and stabbed five times. I was really terrified at the time, and that's when [the officer] started working on my case," she told RNZ on April 26.
The officer initially called her and visited her house, then brought her flowers, invited her on a date and started calling her "spice".
She says he went on to sexually assault her.
She thinks more victims may come forward if the officer's name becomes public.
The officer currently serves in Northland in a senior role, and has been stood down while the matter is investigated, but the offending is alleged to have taken place in another region, Fairfax reports.