The driver of a car has died after a crash with a logging truck on State Highway 1, south of Sanson.
Emergency services were called to the crash involving two cars and the truck about 10km south of Sanson about 4.45pm on Sunday, police said.
The deceased person was the sole occupant of one of the cars and the occupants of the other car were not injured, police said.
The truck driver has been transported to hospital with serious injuries.
The road is expected to remain closed for some time while the Serious Crash Unit examine the scene.
Traffic is being diverted at the intersections of SH1 and Taikorea Road and SH1 and Milner Road.