Britney Spears postpones concert

updated 9:54 p.m. ET April 1, 2004

CLEVELAND - An ailing Britney Spears postponed her concert Thursday night at Gund Arena, her third postponement in as many weeks.

Publicist Leslie Sloane Zelnik said she didn’t know specifics of Spears’ illness. The singer postponed two shows in mid-March because of a knee injury suffered while performing in Moline, Ill.

As Thursday’s concert time approached, fans were still heading through a steady rain for Gund Arena, where security guards turned them away. The message board above the ticket windows flashed the rescheduled date, June 29.

The earlier postponed shows were in Rosemont, Ill., and Auburn Hills, Mich.