Photo: RNZ / Robin Martin
Emergency services are at the scene of a serious crash that has blocked State Highway 1 near Tinwald in Mid-Canterbury.
The crash, involving a truck and three cars, was reported at 3.30pm, at the intersection with Laings Road.
One person is reported to have serious injuries and the road is expected to be blocked for several hours.
Detours are in place and motorists should expect delays.