One person has died and three others are injured after a serious crash in Kaiwaka.
A truck and a car crashed about 5km south of the Kaiwaka township at 1.40pm and State Highway 1 has been closed.
One person has been seriously injured and two people are in a moderate condition.
The Serious Crash Unit is attending the incident and motorists are advised that the closure of SH1 is expected to be in place for some time.
St John dispatched a Northland Rescue Helicopter, two ambulances, a Primary Response in Medical Emergencies (Prime) doctor, and a first response unit to the scene.