Mick Jagger will undergo heart surgery in New York City this week, according to Drudge Report. The publication cites unidentified sources who say the 75-year-old frontman will have a heart valve replaced.

On Saturday, the Rolling Stones announced that their nine-week North American tour had been postponed until further notice. According to a statement issued by the band, Jagger was advised by doctors that he cannot go on tour at this time as he requires medical treatment.

The No Filter tour was scheduled to run from April 20th to June 29th.