A major Canterbury highway has been blocked by a crash between a truck and a car that has left one person critically injured.
Emergency services rushed to the scene on State Highway 1 at Dunsandel between Hororata Dunsandel Rd and Browns Rd, about 3.40pm.
They were working to extract one person from the wreckage, who has been critically injured.
A Hato Hone St John spokesperson said another person was treated for minor injuries, and both patients have been rushed to Christchurch Hospital.
