A driver was seriously injured after a car overturned and landed on its roof in Preston, say police.
Police were called after a Vauxhall Corsa, travelling in the direction of Grimsargh, collided with the centre of a roundabout at the junction of Longridge Road and Bluebell Way in the early hours of Sunday, July 1.
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Police say the driver, a 29-year-old man from Ribbleton, suffered serious head, back, chest and stomach injuries and was taken to Royal Preston Hospital for treatment.
A 27-year-old man from Lea, a passenger in the car, suffered minor injuries.
The road was closed for more than four hours while accident investigators attended the scene.
Police are now appealing for information and are keen to speak any witnesses, in particular a number of drivers who stopped at the scene.
Sgt Phil Baxendale, of Lancashire Police, said: “We are appealing for information following a serious road traffic collision in Preston.
“The driver of the Vauxhall has suffered a number of serious injuries and we want to establish exactly what has happened.
“We understand a number of motorists stopped at the scene to help those involved. If this was you and you have yet to speak to police, please get in touch.”
Anyone with information can contact police on 101 quoting log reference 0392 of July 1.