NASHVILLE — Kings of Leon canceled their remaining US tour dates as lead singer Caleb Followill suffered from “vocal issues and exhaustion,” the rock band said Monday.

“We are so sorry to say Kings of Leon are canceling their entire US tour due to Caleb Followill suffering from vocal issues and exhaustion,” the group 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. Unfortunately, the US dates cannot be rescheduled due to the band’s international tour schedule,” the statement added.

The decision came after Followill abruptly cut short a performance in Dallas over the weekend due to extreme heat.

“There are problems in our band bigger than not drinking enough Gatorade,” back-up singer Jared Followill, who is Caleb’s younger brother, tweeted after the incident in Texas.

The group had more than 20 dates remaining on their US tour and promised that tickets would be fully refunded.

They are set to resume performing Sept. 28 in Vancouver before traveling to South Africa and Australia in the fall.

“Utterly depressed,” Jared Followill tweeted about the canceled US tour. “It’s completely out of my hands. Family has to come 1st. If bass solos & backing vocals were more popular, I’d be there,” he added.

“Bummed about the tour not happening,” tweeted the band’s drummer, Nathan Followill, elder brother to Jared and Caleb.

“So sorry 4 all the fans. We just need some rest. Thanks 4 understanding. WE ARE NOT BREAKING UP!” he added.