One person has been seriously injured and three others received minor to moderate injuries in a seven-car crash near Te Puke.
Senior Sergeant Shannon Clifford said the crash involved a series of nose-to-tail crashes and a head-on collision between two vehicles.
State Highway 2 was blocked in both directions after the 6pm crash at the intersection of State Highway 2 and Te Matai Road, Te Puke.
The diversion was lifted at 7.05pm.
Police said tow trucks would be at the scene shortly.