Brazilian President Jair Bolsonaro is scheduled to undergo surgery to remove a bladder stone on Friday, a doctor for the Brazilian leader told Reuters.

Bolsonaro will check in to a hospital in Sao Paulo on Thursday to prepare for the procedure and will be hospitalized until Saturday or Sunday at the latest, said Leandro Echenique, one of several doctors on Bolsonaro's medical team.

The president's office, however, did not immediately respond to a request for comment on Echenique's remarks.

Bolsonaro said in late August that he would undergo a procedure to remove a kidney stone this month, although he later said it was actually a bladder stone. "I have had it more than five years," he had told supporters outside his residence on September 1.