A 28-year-old man is in hospital with life-threatening injuries after an assault in a Sheffield pub over the Easter weekend.
A 23-year-old man was arrested on suspicion of assault and has been released while inquiries continue.
South Yorkshire Police ordered the temporary closure of Walkabout on Carver Street following a fight in the early hours of Sunday.
The Australia-themed pub has since reopened.
Police said they allowed Walkabout to reopen after imposing "strict measures" and "a set of agreed conditions", including close monitoring, regular reviews, better CCTV and changes to door security and management.
Ch Supt Shaun Morley, of South Yorkshire Police, said: "Following this serious incident, we worked quickly to enforce a 48-hour closure notice on this licensed premises, which was in effect from Sunday lunchtime."
A Walkabout spokesperson said: "The closure followed an unusual incident which took place on Saturday evening and we are confident that all possible steps have been taken, working closely with the police and other authorities, to ensure it cannot happen again."
The pub reopened in 2015 after a £1m refurbishment.
The injured man is said to be in a stable condition in hospital.