Police in Eastbourne have made an arrest following reports of a rape on Monday.
A woman in her 30s reported being sexually assaulted in an alleyway off Firle Road, to the rear of Buskers Bar, at 10.22pm.
Officers say the suspect made off on foot after a member of the public disturbed him - he was apprehended after an area search.
A 24-year-old remains in custody for questioning.
The victim is being supported by specially trained officers.
DS Barry Chandler said:
"This incident is being investigated as a priority and we are carrying out fast-time enquiries to establish what has taken place.
"Anyone with information, or who witnessed anything suspicious, is urged to report it to us online or by calling 101, quoting 1391 of 02/08."