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The 'Sex On Fire' stars are forced to end their tour early.
Kings Of Leon have cancelled the rest of their US tour as lead singer Caleb suffers exhaustion.
"We are so sorry to say Kings of Leon are cancelling their entire US tour due to Caleb Followill suffering from vocal issues and exhaustion," they said in a statement.
"The band is devastated, but in order to give their fans the shows they deserve, they need to take this break."
The night before the announcement Caleb walked off stage claiming his voice was gone, but according to his bandmate and brother Jared there were other issues in the band.
"I know you guys aren't stupid," Jared said.
"I can't lie. There are problems in our band bigger than not drinking enough Gatorade."
Kings Of Leon hope to resume their tour in Canada at the end of September.