One person has been taken to Wellington hospital in a critical condition following a crash in Dannevirke.
A police spokesperson said emergency services were called to Top Grass Road around 2pm on Thursday.
Only one vehicle was involved.
One fire crew from Dannevirke was also called to assist police and Hato Hone St John Ambulance.
A spokesperson from Hato Hone St John Ambulance said a helicopter was sent to the scene and the patient was airlifted to Wellington hospital in a critical condition.