A woman was allegedly raped by a man in a south London park.
Police are investigating reports of a sex attack in Wandle Park, Colliers Wood at 11pm on Saturday, June 25.
Officers were alerted after the victim raised the alarm with bystanders who called police and ambulance.
On Monday, a 24-year-old man was arrested on suspicion of rape as part of the investigation. He has been bailed to return on a date in August.
Despite the arrest, police today appealed for any witnesses to the alleged attack to come forward.
The man has been described as 6ft, medium build with cropped dark hair. He was wearing a dark light-weight bomber jacket and dark straight leg jeans.
Detective Inspector Suzanne Jordan, from the Sexual Offences, Exploitation and Child Abuse Command, said: "I would like to hear from anyone who was in that area of Colliers Wood on the night of 25th June and who may have seen a man fitting this description.
“If you saw or heard anything suspicious around that time of the night, but have not yet spoken to police please get in touch."
Anyone with information is asked to contact the police on 020 8721 4106, or Crimestoppers on 0800 555 111
