The men who allegedly attacked Westlife's Kian Egan were former classmates of the star.
Kian has denied reports he lost a tooth and suffered a broken nose in the attack.
He said he only suffered a small cut on his nose following the incident in his home town of Sligo.
Kian was outside the Abrakebabra takeaway with two friends when he was accosted by two men.
He said: "Myself and two friends were just outside the restaurant when the two guys jumped me from behind. I got several digs and my friend got one or two. There is no truth that I lost a tooth or had my nose broken. I'm 100 per cent. All I have is a small cut on my nose - that's all."
He said his alleged attackers had attended the same school: "They were classmates. It's very disappointing, because it was my very first night out in Sligo since Christmas and this happened. I didn't get a chance to hit back.
"The staff in Abrakebabra saw what was happening and they called the police. But, by the time the police got there, the two lads had run away. So the police took us to the hospital, but they didn't even have to give me a check up. As I said, it was just very disappointing."