Two others were taken to Waikato Hospital by St John. One person had serious injuries and one person had moderate injuries.
Meanwhile, an elderly man had to be winched from an island in the Hauraki Gulf by helicopter crew yesterday.
He had been walking on a track with friends when he slipped and injured his leg.
The Westpac Rescue Helicopter landed at the top of a steep hill, about 400 metres from the man.
He was winched from the area using an air rescue vest and flown to Auckland City Hospital in moderate condition.