Multiple people were believed to have been involved in a Papakura stabbing which left a man in a critical condition this morning.
Police were called to the assault at Rosehill in Papakura about 2.30am.
A 21-year-old man had been stabbed several times and was taken to hospital with "serious, life-threatening stab wounds," police said.
He has had surgery but remains in a critical condition.
Police believe several people were involved and are appealing for anyone who may have witnessed the attack to contact Counties Manukau police.
