Police are appealing for witnesses to a serious head-on collision on State Highway 30, near Rotorua yesterday 29 December.
Two vehicles collided at about 4.45pm near, Hauparu Bay, at Lake Rotoiti.
Police, FENZ and Ambulance, attended the crash.
Four people have been seriously injured as a result of this incident, which Acting Senior Sergeant Mark Anaru says could have been prevented in many ways.
The cause and factors will be determined by an investigation by the Serious Crash Unit.
Police would like to hear from anyone who observed the collision or witnessed unsafe driving at around 4.45pm, on State Highway 30 eastbound leading into Lake Rotoiti.
Anyone with information about the crash is urged to call 105, and quote event number: P053115505 or you can give information anonymously through Crime Stoppers on 0800 555 111.