A man from Peacehaven has been arrested on suspicion of drink driving after a crash on the A26.
The driver of another car was injured in the crash at South Heighton, on the edge of Newhaven, and taken to hospital for treatment, Sussex Police said.
The force said: “Police are appealing for witnesses and information after a serious collision near Newhaven.
“Officers and emergency services attended the scene on the A26 at South Heighton at about 6.30am on Sunday 29 September.