A 33-year-old driver has died in a collision involving two cars on the A6.
The man, who was confirmed dead in Bedford Hospital South Wing, was driving a black Audi R8 when the incident occurred.
The other car was a black Porsche 911, which did not stop, and fled the scene heading north towards Bedford.
Officers from the Beds, Cambs and Herts Roads Policing Unit are appealing to the public to help trace the driver of the Porsche and the whereabouts of the vehicle.
Police Sergeant Stefanie Crichton said: “The A6 is a busy main road which runs through the centre of the county from north to south.
“I would appeal to other motorists who were using this road on Saturday night to report any sightings of a black Porsche.
“I would also urge anyone who has information relating to the driver of this vehicle to contact officers as soon as possible.”
The incident happened at 5.50pm on Saturday, September 13, in Wixams. The Ambulance and Fire Service also attended the scene and the southbound carriageway was closed for several hours while specialist officers completed a full collision investigation.
The identity of the Audi driver, who came from Luton, will be released once an inquest into his death is opened.
Anyone with information relating to this collision can contact PS Crichton, in confidence, at Bedfordshire Police on 101, or text information to 07786 200011.
Alternatively, contact Crimestoppers on 0800 555 111 or via crimestoppers-uk.org