The Rolling Stones tour postponement, officially attributed last week to an unspecific health concern for Mick Jagger, is due to the need for heart surgery for the singer, according to multiple reports.

Jagger is set to have heart valve replacement surgery on Friday here, with the expectation of a full recovery that will allow him to resume touring as early as this summer, according to the Drudge Report, reports variety.com. Rolling Stone reported that it had confirmed the details published by a website called Drudge.