The Serious Crash Unit is at the scene.
"There are currently diversions at Tuhikaramea Rd/Kahikatea Drive, and Collins Rd/Tuhikaramea Rd," police said.
The death brings this year's road toll to 108, up from 94 at the same time last year.
Six of those people died on New Zealand roads over the Easter weekend, which was three times as many as the holiday period last year.
Before this accident the latest fatal crash was yesterday afternoon, when a woman died following a crash involving two vehicles on State Highway 1 near Wellsford, about 12.30pm.
Two other people were transported to hospital with serious injuries.
The Serious Crash Unit is investigating this incident.