Police trying to find out why a young woman driver crashed to her death in an early morning incident have appealed for witnesses.
According to information available to them, the 26-year was driving a grey Ford Focus northwards on the A24, in the nearside lane of the dual carriageway between Findon and Washington.
Soon after 5.30am on Sunday the car left the road and the woman, from Worthing, died at the scene from her injuries.
A public appeal for witnesses said that a silver Kia LE car was believed to be alongside when the Focus suddenly left the carriageway and crashed into roadside vegetation
The driver of the Kia, a 21-year-old man from Worthing, and his front seat passenger, a 23-year-old woman, also from Worthing, were both unhurt.
The A24 was closed northbound while the scene was cleared and investigations carried out, and police would like to thank drivers whose journeys were disrupted for their patience and understanding.
Anyone who saw what happened or who noticed either vehicle being driven shortly before the collision occurred is asked to email firstname.lastname@example.org or phone 101, quoting Operation Bookham.
A 21-year-old Worthing man has been arrested on suspicion of causing death by dangerous driving and bailed until September 1 pending further enquiries, said Sussex Police.