iHeartRadio 2012: Green Day's Billie Joe Armstrong to Enter Rehab after Meltdown

Billie Joe Armstrong is set to enter rehab.

Armstrong, one of the singers for the Grammy winning rock band "Green Day", will reportedly be treated for substance abuse, according to a statement from the band released Sunday. This announcement comes after the front-man had an on-stage meltdown two days prior at the iHeart Radio Music Festival in MGM Grand in Las Vegas. This is also two days before the band's next album titled "Uno" is scheduled to be released.

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During the group's festival performance, Armstrong went into a profanity-laced tirade ending with him smashing his guitar in front of the crowd. The clip hit YouTube and quickly went viral.

"Green Day would like to apologize to those they offended at the iHeartRadio Festival in Las Vegas," says the statement. "The band regretfully must postpone some of their upcoming promotional appearances."

The video shows Armstrong acting out when he realized the end of the band's scheduled 30-minute set was coming to a close. "They say we got nine minutes left! I say boo to that f---ing s---!"

"I've been around since 19-f---ing-88!" he continued. "I'm not f---ing Justin Bieber, you motherf---ers. This is a f---ing joke! And now you're gonna give me one minute? Now I got nothing left. I got nothing left. I'm gonna show you what one f---ing minute looks like."

The two-day festival featured and array of other acts which included No Doubt, Usher and Bon Jovi with each performing short sets.

"Is it possible no one in management bothered to tell Green Day ahead of time they had a half-hour slot, just like (almost) every other headliner on the bill?" Chris Willman wondered on Yahoo's Maximum Performance blog. "Not likely. Is it possible Armstrong knew this was good theater and bound to get them into the news cycle three days before the release of their long-awaited new album? Who could be so cynical!"