A woman was raped in an alleyway on Saturday night (July 26).
Police are appealing for witnesses following the incident in an alleyway connecting East Street and the Little London car park in Chichester.
The 25-year-old was attacked between 10pm and midnight.
Officers want to speak to anyone with any information and in particular a man and woman seen in the area at the time.
A 32-year-old local man has been arrested on suspicion of rape and released on bail until October 9.
Anyone with information should call police on 101 or email firstname.lastname@example.org, quoting serial 99 of 27/7.
Alternatively call independent charity Crimestoppers free and anonymously on 0800 555 111.