A man is being flown to Dunedin Hospital in a critical condition after his truck crashed near Raes Junction in Otago this morning.
A St John Ambulance spokesman said the truck rolled on farmland between Raes Junction and Beaumont about 9am.
A police spokeswoman said it was not yet known whether the vehicle was a stock truck, a fertiliser truck, a fuel tanker or a milk tanker.
It was also not yet clear whether any other vehicles were involved in the incident.
Investigations are continuing.
Worksafe was likely to investigate, she said.
This story originally appeared in the Otago Daily Times.