Three people are in hospital after a smash at West Melton on West Coast Road.

The traffic's been diverted away from the scene of the two car crash, which happened at about 7.55pm.

One person's been treated with serious injuries while two have moderate injuries.

They are all being transported to Christchurch Hospital.

One person was initially trapped, however Fire and Emergency managed to get them out.

Police are investigating at the scene.