POLICE in Royal Wotton Bassett were called to reports of an overturned car just after midnight on Saturday.
They found the car unattended and a search of the area was unable to establish where the driver was.
A spokesman said: “A vehicle that was located just after midnight on the A3102, unfortunately the vehicle was unattended and even after an extensive search of the area by response, NPT and the dog unit the driver wasn't located. Enquiries are still ongoing at this time.”
Anyone with any information should call 101.