A woman is dead after a two-car crash on State Highway 2 near Eketahuna on Friday morning.
A second woman is also being treated for serious injuries.
The road is closed at Anzac Bridge near Eketahuna and diversions are in place via Opaki Road and Morrisville.
Motorists are advised that the road is expected to be closed for at least two hours.
Emergency services were called to the crash after report that two people were trapped in a vehicle. The driver of the other vehicle was not believed to be injured.
Police say it's too early to know if a nearby diesel spill on the road caused the crash.
The road is closed between Kiriwhakapapa and South Road Number Two.