One person has been critically injured in a crash that closed State Highway 2 through the Karangahake Gorge.
The two-vehicle crash happened near School Rd and was reported just before 1pm, a police spokesperson said.
The road has since reopened. Motorists have been warned to expect delays until congestion has cleared.
A Hato Hone St John spokesperson said four ambulances, one helicopter and one operations manager were sent to the scene.