Two men were taken to Wellington Hospital, after a stabbing at a house in the suburb of Hataitai on Monday afternoon.
Police were called to an address in Moxham Avenue at about 3.40pm.
They say one man remains in a stable condition in Wellington Hospital after receiving a number of stab wounds.
The other man was treated and discharged.
Officers are speaking to both men and their associates.
They say no one else is wanted in connection with the incident.