UPDATED 8.46pm: A horror day on South Island roads has left one person dead, and four in hospital.

Police are still at the scene of the latest incident on Yaldhurst Road, where a police car collided with a fleeing vehicle during at chase just before 5pm.

A spokesperson has confirmed two people are in a serious condition at Christchurch Hospital, while two others have moderate injuries.

Earlier today one person was killed after a collision involving a car and truck just outside of Christchurch in Templeton.

A three-car crash was reported just after 5.30pm on Linwood Avenue.