Four people have been arrested on suspicion of affray following an incident outside a Leamington night club on Saturday night.
A 24-year-old man suffered head injuries in the course of the incident, which happened outside Altoria in Warwick Street at about 10pm.
A 26-year-old man, two 24-year-old men and a 19-year-old woman were arrested and taken into custody for questioning.
They have since been released on police bail pending further inquiries.
Police investigating the incident would like to hear from anyone who witnessed it or has any information which would help with inquiries.
Anyone with information is asked to call Warwickshire Police on 101 or contact Crimestoppers anonymously on 0800 555 111 or www.crimestoppers-uk.org