One person has died following a crash on the Southern motorway near Mosgiel, police have confirmed.
Emergency services were called to the scene near Chain Hills, between Saddle Hill and Kinmont Park on State Highway 1, just after 11.35am today.
The crash involved a van and a truck.
A member of the public was seen trying to resuscitate the person.
The motorway reopened at 4.20pm.
Anyone who saw the crash is asked to call Dunedin Police on (03) 4714800
The Serious Crash Unit is investigating.