A manhunt is continuing for a man and woman believed to be involved in a stabbing in east Christchurch on Monday morning.
Det Insp Nicola Reeves said the victim remained in critical condition after being repeatedly stabbed between 5am and 6am at Bexley Reserve.
Witnesses heard arguing before the attack unfolded, Reeves told AM on Wednesday.
A search is continuing for a man in his 20s, of medium build and wearing a high-viz t-shirt, while the woman was understood to be of a larger build and wearing a white dress.
Reeves said the pair left the scene in a white vehicle and they're pleading with the public for extra information.
"He is in a critical condition - he's fighting for his life," she said of the victim. "He is surrounded by a lot of love up at the hospital and so this is why we're really making this appeal to the public so that we can actually get this matter resolved and give this family and our victim some answers.
"We released the details yesterday about this man and this woman [offenders]... since that time, and even since this matter was first reported, we've had a lot of calls coming in and we're chasing all of those down to work out whether they're relevant to our investigation or whether they're not."
Reeves thanked members of the public who had so far come forward with information and assisted with the investigation.
She urged anyone with further information to contact police on 105 or Crime Stoppers anonymously on 0800 555 111, quoting file number 221114/3294.
