Three people have died in a car crash on the A350 at Semington, south east of Bath, in the early hours of this morning.
Wiltshire Police have said they believe only one vehicle was involved in the accident between Trowbridge and Melksham, which saw a silver Volvo S80 crash into a hedge, before catching fire.
A force spokesman said: "The incident took place shortly before 5.45am this morning and involved a silver Volvo S80 travelling towards Westbury from the Melksham direction.
"The vehicle left the carriageway and collided with a hedge before catching on fire.
"Tragically, all three occupants of the vehicle died at the scene."
The A350 between the Semington roundabout and Stony Gutter is closed and unlikely to be reopened for several hours.
There is limited local access to Keevil.
Motorists are being asked to avoid the area until further notice.
Wiltshire Police would like to hear from witnesses.
Anyone with information is asked to contact the Serious Collision Investigation Team at Wiltshire Police on 101 or Crimestoppers on 0800 555 111 where information can be left anonymously.