A rescue helicopter has transported a patient in serious condition after an incident at a motocross event on the outskirts of Milton.
A St John spokeswoman said it was notified of a motor vehicle incident on Big Bush Rd at 11.58am.
One helicopter responded.
It assessed and treated one patient who was flown in a serious condition to Dunedin Hospital.
A police spokeswoman said they received a report of someone coming off a motorbike in the vicinity of Akatore.
A Fire and Emergency New Zealand spokesman said crews were on site at a motocross event.
They were assisting with a Stokes basket that was required for a medical event, he said.