Police are appealing for anyone who witnessed an assault that took place in the Stone Roses Bar on Briggate in Leeds, to come forward with information.
A 27-year-old Leeds man suffered serious facial injuries and damage to his ear, which was bitten during the assault, which took place in the early hours of Sunday August 3.
Detectives would like to speak to anyone who may have been inside the bar just after 4am and witnessed the incident.
PC Jason Ridgeway, leading the investigation, said: “The victim was on the dance floor when he was approached by three men who then attacked and punched him on a number of occasions. One of the men sat on top of the victim and bit his ear.
“Security staff at the bar intervened in the assault and ejected the three men. The victim was taken to hospital to be treated for his injuries.
“We are currently following a number of lines of enquiry to trace those responsible, including looking at CCTV in the bar in detail but are also keen to hear from anyone who may have any information that could assist this investigation.
“This was a barbaric and violent attack, if you were in the Stone Roses bar and witnessed this assault then please contact us.”
Anyone with information is asked to contact British Transport Police on 0800 405040 quoting background reference PSUB/B9 of 18/8/2014.
Information can also be passed to Crimestoppers, anonymously, on 0800 555 111.