Three people are dead after what police have called a "horrific" crash between a truck and a car in Rangitikei.
Central district road policing manager inspector Phil Ward said the collision happened between Putorino Road and Te Hou Hou Road in Hunterville at about 2pm on Monday afternoon.
A large number of emergency service staff responded to the scene, where the three people were found dead.
The driver of the truck received treatment at the hospital, Ward said.
"Any fatal crash, but particularly one where multiple people have lost their lives, is confronting even for veteran emergency service personnel," Ward said.
"We will also be making sure our staff at the scene have the support they need following this horrific event.
"Crashes of this nature are confronting for everyone, including those involved, those first at the scene, and emergency responders."
Police were in the early stages of the investigation to determine what caused this tragic event, Ward said.
The Serious Crash Unit has conducted a scene examination, and the vehicles have since been towed from the scene.
State Highway 1 was due to reopen shortly.
Police were also speaking with and arranging support for witnesses of the crash who were first on scene and swiftly alerted emergency services.