The Red Hot Chili Peppers were forced to cancel a show Saturday night after frontman Anthony Kiedis was rushed to the hospital.

A rep said Anthony, 53, was taken in an ambulance from KROQ's Weenie Roast at the Irvine Meadows Amphitheater and hospitalized because he was suffering from severe stomach pain.

"We are devastated about it," band member Flea told the disappointed crowd. "We're really sad. We love you so much. We love to rock…Unfortunately, there's a medical thing that happened and he needed to deal with it."

red hot chili peppers getty

The Red Hot Chili Peppers

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Chili Peppers drummer Chad Smith later tweeted a call-out to Anthony and their fans.

Other groups on the lineup were Weezer, Blink-182, Garbage and Panic! at the Disco.

Here's hoping Anthony gets well soon!