A serious crash has blocked State Highway 27 and diversions are in place.
Emergency services are at the scene of a two-car crash between Patetonga and Torehape on the western side of the Hauraki Plains.
One person was in a serious condition and has been transported by helicopter from the scene.
The Waikato Serious Crash Unit was in attendance.
The road would require restoration following the investigation, police said.
