Emergency services were called to reports of a motorcycle having collided with a wall at around 8.15pm on Sunday 28th May.
Police are appealing for witnesses to a collision in Barfield Park, Lancing, in which a man sadly died.
Sussex Police say a 49-year-old local man was treated by the ambulance service but was sadly confirmed dead at the scene.
An investigation is underway to establish the full circumstances and the road is likely to remain closed for some time.
Anyone who witnessed the incident, the events leading up to it or has any relevant video footage is asked to contact police online or via 101, quoting Operation Beeton.