A person has died in a crash that's blocking State Highway 1 in Horowhenua.
Emergency services were called to the crash, between a car and a truck, just after 6am at Manakau.
Police said the car driver died at the scene and the truck driver suffered moderate injuries.
At 10am the road remained closed and police were warning motorists to expect delays.
SH1, south of Levin, is being upgraded because of safety concerns.
In November, four people died in a crash on the stretch of road between a truck and a van.