UPDATED 5.58PM: One person is dead following a crash near Sanson.
The crash involved two cars and a logging truck tat 4.45pm.
"The deceased person was the sole occupant of one of the cars," says police.
"The truck driver has been transported to hospital with serious injuries.
"The occupants of the second car are uninjured."
The road is expected to remain closed for some time while the Serious Crash Unit examine the scene.
Diversions remain in place at the intersections of State Highway 1 / Taikorea Road and State Highway 1 / Milner Road.
Emergency services are responding to a crash on State Highway 1, about 10km south of Sanson.
The crash occurred at 4.45pm and is believed to have involved a car and a logging truck.
There is no information as yet regarding the number of people involved or the extent of injuries, says police.
"The road is blocked. Traffic diversions are currently in place at the intersections of State Highway 1 / Taikorea Road and State Highway 1 / Milner Road.
"The Serious Crash Unit has been notified."
More information will be released as soon it becomes available.