Police in Auckland are asking for help to identify a man who was the last person to be seen with a woman before she was viciously assaulted.
Police are looking for this man in relation to the attack. Photo: NZ Police
They said the attack happened in the early hours of Sunday morning.
The woman endured what the police described as a "very disturbing, nasty attack", waking up in a quarry in Riverhead, finding herself injured and a man standing over her with a bat.
They said the woman, who was extremely traumatised, had been treated for serious gashes to her head and face and a broken thumb.
Detective Senior Sergeant Kim Libby said the woman had previously been with a group of friends at the Pride Parade on Ponsonby Road.
"They were enjoying themselves and at some stage it looks like she's sort of met a chap, and this is all about 10.20pm, when she last sort of recalls what happened and then she's got a major memory blank and comes to at the quarry at Riverhead."
Mr Libby said CCTV footage reveals a man in his 30s and of solid build was with the woman before the attack.
He was asking anyone who might know who the man was to contact police.
"She's got a major memory blank and comes to at the quarry" - Detective Senior Sergeant Kim Libby