Detectives want to trace a man over an attack in a Chesterfield bar.
They have issued a CCTV image of a man they believe could hold vital information about the incident inside the Association Bar on Corporation Street.
A man threw a punch at another man, but missed and hit a 20-year-old woman in the face.
The offender, who struck at around 1am on Friday, April 10, was of mixed race, around 6ft tall and of an athletic build.
Call Derbyshire Police on 101.