Janet Jackson "got suddenly ill" during soundcheck for her show at the Bell Centre Montreal last night (Sept. 29) and was rushed to a hospital, according to a statement from her publicist. The show was postponed.

Jackson is under observation but no further information about her condition has been released.

Some fans were already inside the venue when the announcement was made, according to promoter Gillett Entertainment Group, who adds that last night's tickets will be honored for a make-up date to be announced.

Jackson is scheduled to perform tomorrow night in Boston.