London (CNN) The Rolling Stones have announced the postponement of their upcoming North American tour. The venerable British rockers will not be embarking on a 17-gig tour, scheduled to start on April 20 in Miami Gardens, Florida,due to singer Mick Jagger‘s health problems.

«Mick has been advised by doctors that he cannot go on tour at this time, as he needs medical treatment,» reads a statement from the band. The Stones did not say what medical condition Jagger is being treated for. Jagger, 75, made his own apology to fans on his personal Twitter account.

Mick Jagger says the band will fulfill its tour dates once he has recovered.

I’m so sorry to all our fans in America & Canada with tickets. I really hate letting you down like this. 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.

Mick Jagger – Twitter

Shortly after the announcement, bandmates Keith Richards and Ronnie Wood voiced their support for Jagger. «A big disappointment for everyone but things need to be taken care of and we will see you soon. Mick, we are always there for you!» said guitarist Richards on Twitter.