A man has been arrested on suspicion of assault following an incident at Skegness Liberal Club on Tuesday May 12.
Following a verbal argument, a man is alleged to have struck a woman over the head shortly before 6pm that afternoon.
A man in his 40s from Sheffield has been bailed. It is thought that there may have been a number of potential witnesses in the club at the time and PC Charlotte Leigh is keen to trace anyone with information.
PC Leigh can be contacted by dialling 101 and quoting the incident number. Report crimes anonymously by contacting Crimestoppers on 0800 555 111.