Photo: St John
Four people were flown to hospital by helicopter after a jetboat flipped on the Rakaia River in Canterbury Saturday night.
One person had serious injuries and three moderate injuries.
Emergency services were called to the area near Double Hill shortly after 7pm.
Police said a tractor assisted in righting the jetboat.
A St John spokesperson said three helicopters attended the scene.
"Our crews assessed and treated four patients, three in a moderate condition and one in a serious condition, all airlifted to Christchurch hospital."
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