After onstage rant, Green Day's Armstrong getting treatment for substance abuse

Green Day's Billie Joe Armstrong is headed to treatment for substance abuse.

Sunday's announcement by the band's rep comes after the rock frontman had a meltdown onstage Friday at the iHeart Radio Music Festival in Las Vegas. In a clip that has gone viral, Armstrong profanely complained that the band's time was being cut short, then smashed his guitar.

In a statement to the Associated Press, the band apologized for the incident and said their set was not cut short by Clear Channel, the host of the two-day festival.

The Grammy winning band also is canceling some of its promotional appearances. It is due to release the album “Uno” on Tuesday.

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