Seven men have been arrested following an assault outside Factory nightclub in Manchester City Centre.
Police were called to reports that a man had been assaulted outside the nightclub on Princess Street in the early hours of Sunday 2 December.
An 18-year-old man was taken to hospital with a serious head injury. He has since been released and is recovering at home.
Officers arrested seven men over the weekend and interviewed a 48-year-old woman under caution on Saturday.
Four of the men – aged 20, 27, 39 and 40 – who were arrested on Friday 14 December have all been bailed pending further enquiries.
Detective Inspector Geoffrey Machent said: