After a brief hospitalization, the singer is rescheduling her dates in Boston and Philadelphia, her rep says

By Tiffany McGee
Updated September 30, 2008 07:20 PM
Mario Anzuoni/REUTERS//Landov

Janet Jackson postponed two concert dates this week on her nationwide Rock Witchu Tour due to an undisclosed illness, a rep for the singer said Tuesday.

Jackson, 42, has delayed her Wednesday show in Boston and a Thursday performance in Philadelphia until further notice. She will resume her tour Saturday in Greensboro, N.C.

The postponements come a day after the singer suddenly fell ill during a sound check in Montreal and was rushed to the hospital, forcing her to cancel her Monday night show. She was released a couple of hours later. The nature of her illness wasn’t reported.

Jackson kicked off her tour promoting her latest album, Discipline, in Vancouver on Sept. 10.