A person is in a serious condition in hospital after allegedly being assaulted at a property in Karaka, just south of Auckland.
Emergency services and Police were called to the house, on Enchanchment Lane, about 3.45am, a police spokeswoman said.
One person suffered serious injuries and was taken to hospital for treatment. The victim was said to be in a serious condition.
A St John spokeswoman confirmed paramedics were alerted to the situation at 3.40am and responded with an ambulance and a rapid response vehicle.