Avon and Somerset Police are appealing for help following a single vehicle road traffic collision in the Paulton area in which a person was seriously injured.
It happened on Friday 25th October at about 11.30pm outside Wick House in Upper Radford.
A car was in collision with a stone wall and a tree, causing serious injuries to one of the two occupants in the vehicle.
Police are appealing for any witnesses to the collision to come forward to assist in their enquiries.
Investigators understand that a member of the public stopped to assist at the scene but left prior to the arrival of emergency services.
Officers are particularly keen to speak to him as he may have information to help their enquiries.
They would also like to hear from anyone who may have dashcam footage of the incident.
If you can help, call Avon and Somerset Police on 101m quoting reference 5219247876
A man was arrested on suspicion of drink driving and released under investigation.
You can contact the independent charity Crimestoppers 100 per cent anonymously on 0800 555 111.
No personal details are taken, information cannot be traced or recorded and you will not go to court or have to speak to police when contacting Crimestoppers.