A nightclubber needed hospital treatment after his ear was badly bitten in a “barbaric” attack at a Leeds bar.
The 27-year-old suffered damage to the cartilage of his ear and required stitches after being set upon by three men at the Stone Roses Bar on Briggate.
Police are now appealing for witnesses.
PC Jason Ridgeway, who is leading the investigation for British Transport Police, 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.”
The incident happened in the early hours of Sunday, August 3.
Detectives want to speak to anyone who may have been inside the bar just after 4am and witnessed the incident.
Anyone with information is asked to contact British Transport Police on 0800 405040, quoting background reference PSUB/B9 of August 18, or call Crimestoppers, anonymously, on 0800 555111.