Police have released an image of a woman they would like to speak to after two women were assaulted in Chesterfield.
The women involved then went outside the club, where another woman, also aged 23, was hit in the face and suffered bruising.
Since the incident happened, police had identified a woman they wanted to speak to and she has been eliminated from the inquiry, which is why officers are now turning to the public for help.
Anyone with information is asked to contact the force, quoting reference number 19000380929 and the name of the officer in the case, PC Justine Parsons.
Facebook – send a private message to /DerbyshireConstabulary
Twitter – direct message the contact centre on @DerPolContact
Website – complete the online contact form www.derbyshire.police.uk/Contact-Us.
Phone – call 101.
You can also call Crimestoppers anonymously on 0800 555 111.