A man was detained shortly after the incident on Saturday.
A man's suffered a serious head injury after being struck by a bottle in Chesterfield.
It happened at the 'Vibe' nightclub on Holywell Street, at around 3.50am on Saturday morning.
A 23 old man was taken to hospital, where he remains in a serious condition.
Police arrested a 24 year old man in connection to the incident and he remains in custody.