Janet Jackson [ tickets ] postponed two additional concert dates after a brief hospitalization minutes before a Montreal performance, according to a Reuters report.

Jackson was rushed to Royal Victory Hospital in Montreal Monday night (9/29) when she suddenly became ill during her sound check, a representative said in a statement. She reportedly was discharged from the hospital two hours later. Details regarding the singer's illness were not available.

The 42-year-old pop star postponed her Wednesday (10/1) show in Boston and her Thursday (10/2) show in Philadelphia. She reportedly is recuperating and is expected to resume her "Rock Witchu" tour on Saturday (10/4) in Greensboro, NC.