A crash has closed one lane near the intersection of State Highway 5 and State Highway 28, north of Rotorua.
A police media spokeswoman said they were called to the scene at 11.10am.
"A car has overturned and one lane of the road is blocked."
Fire and ambulance were also called to the scene.
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A spokeswoman for St John said they had sent one ambulance.
"There were no injuries and no one was transported."