R. Kelly was rushed back to his hometown Chicago on Wednesday for medical treatement after falling ill while en route to New York. The singer had been scheduled for a press tour in support of his new memoir, Soulacoaster: The Diary of Me.
"Initial indications are that he is suffering from complications from surgery he had last year to treat an abscess on his vocal cords," reads a statement released on behalf of the singer. "It is unclear how long Kelly may be sidelined."
A book launch party and signing in New York were cancelled, as well as appearances on Late Night with Jimmy Fallon and the Today show.
Kelly's latest album, the throwback-soul set Write Me Back, was also released this week.