Gym Class Heroes frontman Travis McCoy was arrested at a gig on Tuesday night, according to Rolling Stone.

His band are currently participating in the Warped Tour, and were on stage in St. Louis when an audience member called McCoy an 'ignorant f**king n****r'.

McCoy broke his microphone over the man's head as security were removing the offender, and said: "I’m sorry. But when someone calls you something that ignorant and that offensive, you have to bash their head in with a microphone."

After the set, he was arrested, charged with third-degree assault and released on $500 bail the next morning.