Avon and Somerset Police are appealing for witnesses following a fatal collision on the A303 near Buckland St Mary this afternoon.
The incident involving a car and a van happened at about 13:00 and two people have died, police have confirmed.
The road remains closed pending an investigation by collision investigators.
Motorists are being asked to avoid the area and find alternative routes.
Avon and Somerset Police said:
“Anyone who was in the area who has information to help our enquiries is asked to call 101 and speak to the collision investigation unit, quoting log 0460 of today.”