State Highway One near Puhoi, north of Auckland, is blocked after a fatal crash involving a truck and a car.
Emergency services were called to the crash involving one truck and two vehicles at approximately 10.06am this morning near Mahurangi West Road.
Police say one person has died at the scene and three other people have been injured, two seriously.
State Highway One is completely blocked and diversions are being put in place at Warkworth and Silverdale.
Motorists are advised to avoid the area if possible or to use State Highway 16.