Mick Jagger has delayed concerts after suffering from a “physical injury” sustained during tour preparations, sources have confirmed.

The Rolling Stones frontman sent shockwaves around the world and fans into a frenzy when it was announced that the band had postponed their tour of the US and Canada because Jagger had fallen ill.

In a statement, the band said that doctors had advised Jagger, 75, not to tour because he needs to receive medical treatment.

"I really hate letting you down like this," the singer wrote in a statement to fans which was published on his social media channels on Saturday night. "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."

Despite panic from fans about the long-term health of the rock star, sources have confirmed to The Telegraph that Jagger is in perfectly good health, but has in fact only injured himself after training for shows.

A source close to Jagger, who follows a strict diet and exercise regime, said: “It’s not a mystery illness, it’s a physical injury as a result of his strenuous pre-tour preparations. Doctors have told him to take it easy and to concentrate on his recovery. “