State Highway 29 over the Kaimai Range was blocked for more than an hour after a crash this afternoon.

A police spokeswoman said only one car was involved in the crash, which happened about five minutes drive from the Kaimai Range summit on the Matamata side.

The spokeswoman said one person had minor injuries and was treated by ambulance at the scene.

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One lane was blocked after the collision on the main highway and the road was fully reopened about 3pm.

The accident was called in about 1.20pm.