R. Kelly’s promotional plans have been sidelined after he suffered a medical scare. The R&B superstar was on his way to New York to promote his new album Write Me Back and memoir SoulaCoaster when he fell ill.

According to a statement from his publicist, the 45-year-old singer was forced to return to Chicago for medical treatment. “Initial indications are that he is suffering from complications from surgery he had last year to treat an abscess on his vocal cords,” said his rep.

As a result, he has had to cancel appearances on “Late Night with Jimmy Fallon” and NBC’s “Today” as well as a book party that was being held in his honor. It is unclear how long he will be out of commission.

Last summer, Kelly underwent emergency throat surgery to drain an abscess on one of his tonsils. He made a quick recovery, thanking his fans for their support in an online video.