Greater Manchester Police (GMP) is appealing for help, to identify four men in connection with an assault on a group of men in the city centre.
On Saturday 30 April 2016, around 3.50am, three men were assaulted inside Black Dog Ballroom on Church Street in the city centre.
Two of the men suffered serious facial injuries and one of them suffered minor injuries.
All of the four suspected offenders had been removed from the premises, before one of them began acting extremely aggressively towards a woman outside.
The men then walked off along Church Street towards High Street.
Police have released photographs of the men they would like to speak to in connection with the assault.
Detective Constable Sarah Wright of GMP’s North Manchester division, said: “This was a very aggressive and unprovoked attack which could result in life changing injuries for the three men involved.
“If you think you may know these men or have any information about the assault, please get in touch with police as soon as possible”.