Kent Police was called to a report of a collision involving a grey Audi and a pedestrian in Northdown Road Cliftonville at 11.10am on Thursday 18 April 2024.
Officers attended along with South East Coast Ambulance Service and an air ambulance. A man in his 70s was taken to a London hospital with serious injuries.
A 27-year-old man was arrested on suspicion of causing serious injury by dangerous driving and has since been bailed pending further enquiries.
Anyone who witnessed the incident and has yet to speak to police, or who has CCTV or dashcam footage which might assist investigators, should call Kent Police on 01843 222289 quoting reference 46/ZY/13102/24.