A man has died after two trucks crashed on State Highway 1 south of Christchurch on Monday morning.
The crash between a truck and light truck happened at around 7.20am at Rolleston.
Police say the driver of the light truck died at the scene.
Diversions are in place at Tennyson St towards Dunns Crossing via Lowes Rd.
The diversions are likely to be in place for several hours while the serious crash unit investigates.