A 93-year-old man was riding a bicycle from Orchard Lane and turned onto the A28 Canterbury Road in St Nicholas-at-Wade, where he was involved in a collision with a car.
The green Vauxhall Corsa had been travelling along the A28 towards Margate at the time. The collision took place at around 9.30am on Monday 4 October 2021.
The cyclist was taken to hospital with serious injuries and died the following day.
Officers from the Serious Collision Investigation Unit would like to speak to anyone who saw the collision or has dashcam footage which might assist their enquiries.
Witnesses should call the SCIU appeal line on 01622 798 538 or email them quoting XX/MW/110/21.