The attackers beat the fans of the British, alternative rock band with pipes for drinking alcohol during the holy month of Ramadan, Variety reported.
Radiohead issued a statement Friday night.

"Our hearts go out to those attacked tonight at Velvet IndieGround in Istanbul," the statement read. "We hope that someday we wiol be able to look back on such acts of violent intolerance as things of the ancient past. For now, we can only offer our fans in Istanbul our love and support."
In amateur video of the incident published on the website consequenceofsound.net, fans are seen chatting easily when loud, screaming voices puncture through the music. There is scuffling and there are shouts, and then a man enters the frame, swinging and hitting people. At one point, the man picks up what appears to be a stool and then throws it. At another point, he appears to slap one of the radio head fans.
No one was seriously hurt, although one person was seen to be bleeding after the incident, according to Pitchfork.com.