A 30-year-old man is recovering in hospital after he suffered serious head injuries in an attack outside a Derbyshire nightclub.
The incident happened outside Escapade nightclub, Cavendish Street, in Chesterfield at about 2330 BST on Saturday.
Police said there had been an altercation inside the club before the attack.
The man was taken to hospital where he is in a stable condition.
Derbyshire Police has asked for anyone who was in the club at the time, or witnessed the attack, to contact them.