Police have traced a car and driver believed to have been involved in a hit and run collision which left a man needing his arm amputated.
Officers have found the white Kia Picanto which was believed to be involved in the serious collision in Hemel Hempstead last Thursday (March 2).
Following the collision, the woman believed to be driving the vehicle at the time made contact with police and is currently assisting officers with their enquiries. The investigation remains ongoing.
The incident happened at around 10.25pm, where a car was in collision with a man who was working at a manhole on the roundabout between Marlowes and Combe Street, outside The Forum.
As a result the worker fell into the manhole and suffered serious injuries. The air ambulance attended and the man was flown to Addenbrookes Hospital in Cambridge, where he remains in a serious but stable condition.
Officers are now re-appealing to potential witnesses who have not already spoken to police to please come forward, as they may have crucial information.
If you have any information that could assist the investigation, please call Hertfordshire Constabulary on 101 quoting reference 836 of March 2.