A male cyclist in his 60s suffered serious injuries that could be life-changing after he was hit by a car in Skegness on Monday morning.
The crash happened at the Clock Tower roundabout in Skegness at 6.20am on August 3 and the man was taken to hospital by air ambulance.
Road closures are in place on Lumley Road and Grand Parade.
Police said it is believed that a number of pedestrians may have been in the area at the time and seen what happened.
Anyone with information should contact Lincolnshire Police on 101 or via email at [email protected] quoting reference 39 of August 3.
Alternatively, it can also be reported through the independent charity Crimestoppers anonymously on 0800 555 111 or online here.