Police are appealing for witnesses following a serious injury collision on the A6116 Sudborough Road, near Brigstock, Corby.
At about 5.30am on Saturday (16 July), a silver Jaguar S-Type was travelling towards Corby when, for reasons yet unknown, it crossed the carriageway and came to rest in a ditch on the opposite side of the road.
The driver, who was from Corby, was taken to University Hospital Coventry with serious injuries. His three passengers, two men and a woman, were taken to Kettering General Hospital with minor injuries.
Witnesses, or anyone with information about the collision, are asked to contact the Northamptonshire Police Collision Investigation Unit on 101 or call the Drivewatch Hotline on 0800 174615.