Two people died after a single vehicle crash on State Highway 1 by Umawera at the Hokianga Harbour.
Police were attending the serious crash at around 5.40pm on Wednesday night.
The road was closed for a few hours with motorists advised to delay travel or use an alternative route.
Senior Sergeant Hayden Korach said the vehicle left the road on a right-hand bend, hit a tree and continued into a paddock.
He asked anybody who saw the vehicle, a Nissan Safari four-wheel drive, travelling between Kaikohe and Umawera on Wednesday night to contact police.