One lane has reopened after a truck fire blocked State Highway 29 on the Kaimai Range.
Police were called to the fire at the Kaimai summit about 11.05am.
No one was injured.
A Fire and Emergency NZ spokeswoman said two trucks were called to the scene and left after extinguishing the fire.
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Waka Kotahi NZ Transport Agency said there was stop/go traffic management in place and asked that drivers allow extra time.
Earlier, it advised that both lanes were closed.
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