The Rolling Stones have postponed their North American tour.

The group announced the news early Saturday morning, revealing that the upcoming dates of their No Filter Tour will be rescheduled while Mick Jagger undergoes "medical treatment." The tour was set to kick off in Miami, Florida, on April 20.

"Mick Jagger has been advised by doctors that he cannot go on tour at this time as he needs medical treatment. The doctors have advised Mick that he is expected to make a complete recovery so that he can get back on stage as soon as possible," a statement obtained by ET Online read.

A rep for the Rolling Stones declined to comment further on the condition for which Jagger  is being treated. The 75-year-old musician apologized to fans on Twitter, saying  that he hates "letting you down like this."

"I'm so sorry to all our fans in America & Canada with tickets. I really hate letting you down like this," he tweeted. "I'm devastated for having to postpone the tour but I will be working very hard to be back on stage as soon as I can. Once again, huge apologies to everyone."

All 17 dates on the No Filter Tour scheduled in North America have been postponed. Fans have been advised to hold onto their tickets, as they'll be valid for all rescheduled dates.

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