Police say it is "highly likely" a woman who woke up to being attacked in an Auckland quarry is inside a car seen at the site on CCTV footage.
Video of a car entering and leaving the quarry in Riverhead has been released as investigators try to figure out what happened to the woman early on Sunday.
It shows the car entering the area next to a timber year on Sawmill Rd around 1:45am - and leaving at speed at 2:01am.
"We believe it is highly likely that the victim is inside this car and possibly unconscious when the car enters the quarry," Detective Senior Sergeant Km Libby says.
Specific details of the car are unclear so police are working with experts to pinpoint what make and model the car is.
In the meantime, they want to hear from anyone who might recognise it.
Police say the woman was out with friends in the central Auckland suburb of Ponsonby and doesn't remember anything from the time she was with her friends to waking up in the quarry.
Det Snr Sgt Libby says she's still recovering and will be interviewed by detectives again on Tuesday.
Tests are being done to determine whether she'd been drugged or stupefied.
They're still trying to find and identify a man seen talking to the woman outside a Mobil station on the corner of Ponsonby Rd and K Rd that night.
He was the last person to talk to her before she was attacked.
Det Snr Sgt Libby says it could may well be the man is innocent, but they need to consider the "strong possibility" he could be the driver seen in the CCTV footage.
Anyone with information on the case should call the inquiry team on 021 191 4085 or via private message on the Waitemata Police Facebook page.
"No piece of information is too small," she says.