A motorcyclist, who died in a collision on the A621 near Owler Bar on Monday, July 15, has been named as Jay Titterton, from Derby.
The family of Mr Titterton, who was 48, are being supported by specialist officers, and police say their thoughts are with them at this time.
Police were called to reports of a collision at around 3.15pm on the A621 near the junction with Car Road.
A KTM Super Duke R motorbike travelling from Owler Bar to Baslow had left the carriageway and collided with a stone wall.
East Midlands Ambulance Service and an air ambulance crew were also in attendance. Mr Titterton was pronounced dead at the scene.
An investigation into the circumstances surrounding the collision has been launched and officers are appealing for information from the public.
In particular they want to hear from any motorists with dash cam devices, who were travelling in either direction on the A621 between Owler Bar and Baslow at the time.
Anyone with footage, or other information should call the collision investigation unit on 101 and quote reference 19*369686.
You can also call Crimestoppers anonymously on 0800 555 111.
In the event of an emergency you should always call 999.