A motorist seriously injured in a crash halfway between Queenstown and Invercargill will be choppered to hospital.
Emergency services were called to the incident on the Five Rivers Lumsden Highway, just after 11am on Tuesday.
A St John spokesman said a helicopter and an ambulance are at the scene of the single-car crash.
He confirmed a person has suffered serious injuries.
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The road is blocked and motorists are asked to avoid the area.