Pete Wentz says he didn't pick a fight with a heckler at Fall Out Boy's Monday night concert in Chicago. Rollingstone.com reports that the show "turned bloody" when Wentz, 28, and a member of the band's security detail got involved in a "fracas" with a fan an unidentified audience member described as a "250 lb. meathead-looking guy."

Wentz responded toMTV.com:

"The story on the Internet is absolutely false. Yes, we were playing an acoustic afterparty for Spin. It was a good time for the most part.

Yes, the guy was heckling me and the band, so were other people, most in good fun. But we get heckled onstage all the time, and while I'm a jerk, I'm not the kind of person who would ever lash out at someone simply over this.

I mean I'm not as big as Akon and haven't written as many good songs. The truth is on the way out the door I had to pass directly next to the guy and I knew it, so I kept my head down and walked out.

As I did, the guy reached out and grabbed me and said something I couldn't really hear -- it was a glorious use of the English language, though. As he grabbed me, I punched him. Yell all you want at me, say whatever, but in a situation like that I will defend myself.

After that, of course, it got chaotic, [but] we have several independent witnesses that gave statements saying he grabbed me first ... I am not worried over the outcome, as I was clearly in the right. Anything anyone else is saying or writing is simply not true."

This is not the first time Wentz has been accused of fighting with a fan. In January, a video surfaced of a brawl Wentz participated in at a Fall Out Boy concert in New Mexico.

Us magazine