A shaken motorist had handguns pointed at him while driving down the Waikato Expressway over the weekend.

Noah Hutchinson was driving to Hamilton from Woodhill when a car pulled up next to him and two passengers shouted at him to take the next exit- while pointing weapons.

He says the thieves were probably after his motorbike, and he slowed to catch up with the cars behind him to avoid a scene.

"I'm assuming they saw the motorbike on the back and they wanted to steal it or my car as well. It set in pretty quick- this is happening, I don't have much time to think about it."

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• Handguns brandished at motorist on Waikato Expressway