Police are appealing for witnesses and relevant footage after a collision involving a car and a motorcycle.
The incident was reported on the A285 at Halnaker near Chichester, near the Anglesey Arms public house.
It involved a black Jeep Wrangler and a blue Suzuki motorcycle at about 4.10pm on Monday, August 21.
The rider of the motorcycle, a 53-year-old local man, sustained serious injuries and remains in hospital.
Officers from the Roads Policing Unit are investigating the collision, and want witnesses or anyone with footage of the vehicles in the area at the time to come forward.
Information can be reported to Sussex Police online or on 101, or email [email protected] and quote Operation Palermo.