Photographer Stuart Payne, 66, died following injuries sustained in a collision with a motorbike on Dalby Road, Melton Mowbray, on Sunday morning (20 July).
The rider of the Kawasaki motorbike sustained serious injuries.
Another motorbike, a red and white Yamaha that was with the Kawasaki at the time of the accident, was not involved in the collision.
Detective Constable Paul Bingham, of Leicestershire Police, said: ‘We would like to appeal to anyone who witnessed the collision, or saw any rider beforehand, to please get in touch.’
Anyone who can help is urged to call 101 and leave a message for DC Bingham, whose identification number is 1288.
Alternatively, people can call Crimestoppers, anonymously, on 0800 555 111.
The crime reference number is: LEP-200714-0248.