Morrissey was recently admitted to the William Beaumont hospital in Royal Oak, Mich., Billboard.com reported Saturday.
A representative for the British singer said, "he is undergoing tests for a suspected bladder infection."
Morrissey had canceled a tour stop in Flint, Mich., on Jan. 24 and has postponed two additional shows due to a "band illness," the news report said. The tour was supposed to continue Monday, but it was unclear if Morrissey's ailment will result in a further delay.
Martin Bashir resigns from MSNBC over Sarah Palin comments
Ron Burgundy interviews Peyton Manning on SportsCenter