Two women on a night out on Sheffield were attacked in a city takeaway.
The women, aged 18 and 21 were attacked in Aslan's takeaway on West Street in the city centre.
They told South Yorkshire Police another woman they did not know dragged them by their hair and assaulted them at around 1.50am on Sunday, October 30.
Detectives investigating the incident have released CCTV images of a woman they believe could hold vital information about the incident.
Anyone with information on her identity should call South Yorkshire Police on 101.