UPDATED 4PM: Four people were injured after a van and trailer rolled near the summit of the Kaimai Range.
A St John northern communications spokeswoman said the four people had minor injuries and none needed to be transported to hospital.
Police northern communications Inspector Chris Tate said a van towing a trailer had rolled and was found 20m down a bank.
The crash was not blocking the road and the only traffic issues were caused by people slowing down to take a look.
EARLIER: Reports are coming in of a crash on State Highway 29 near the summit of the Kaimai Range.