File photo: RNZ/Tim Brown
Police said the single-vehicle accident happened at 9.10am on State Highway 23 in Whatawhata, near the intersection with Ferguson Rd.
Two other people have serious injuries, and one person has a minor injury.
The Serious Crash Unit are investigating.
Te Pahu Rd and Ferguson Rd were closed for a period of time while emergency services were at the scene but have now opened.
