Police are appealing for dashcam footage following a two-vehicle collision on the A417 at Crickley Hill.
The collision, which took place at around 10.50am on Wednesday (15 January), involved a grey Mercedes Benz GLE and a green Seat Altea.
Officers now believe a third vehicle may have been involved and would like to identify the driver so they can speak to them about the incident.
It is not believed anybody was seriously injured but one person was taken to Gloucestershire Royal Hospital to be assessed.
Officers would also like to thank the public for their patience while those involved were treated at the scene and the debris was removed.
Anyone with information or who has dashcam footage which they believe to be relevant, and who has not yet spoken to police, is asked to complete the following online form quoting incident 134 of 15 January: https://www.gloucestershire.police.uk/tua/tell-us-about/cor/tell-us-about-existing-case-report/
