NEW ORLEANS -- The Grammy-winning rock band Green Day has cancelled its upcoming performance in New Orleans.

The band was scheduled to headline the Voodoo Music + Arts Experience at City Park on Oct. 27. But a spokesman for the group said Tuesday the performance has been cancelled.

The announcement comes less than a month after the band's front man Billie Joe Armstrong headed into treatment for substance abuse.

Voodoo producer Stephen Rehage (RE-haj) says he's disappointed by the cancellation but "the health and well-being of Billie Joe is the most important thing right now. We wish him and the entire Green Day family the best and offer them our full support."

Voodoo is scheduled for Oct. 26-28 and includes such acts as Neil Young, the Avett Brothers, Skrillex, Nas and Jack White.