Emergency services are at the scene of a serious four-vehicle crash on State Highway 29.
The road was closed, New Zealand Transport Agency Waka Kotahi said, with the only detours being via Rotorua or Waihī.
Police were called to the crash, near the Kaimai summit, at 6.40am.
“The road is blocked and traffic management is in place.
“Motorists should avoid the area, or expect delays.”
Hato Hone St John said two ambulance and one rapid response vehicle went to the crash and treated six people.
One person in a serious condition and two in a moderate condition have been taken to Tauranga Hospital.
Three were treated at the scene for minor injuries.
NZTA said the serious multiple-vehicle crash had closed State Highway 29 between State Highway 28 and Hanga Rd, north of the Kaimai lookout.
The highway was likely to be closed for some time.
NZTA advised road users to delay their journey.
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