An electrical fire broke out last night in the box office of Broadway's Ambassador Theatre, where Suzan-Lori Parks' Topdog/Underdog is currently playing.

The fire, contained to the box office, forced the audience and cast onto West 49th Street. No one was hurt, though the remainder of the performance was canceled.

Topdog, which does not have Wednesday matinees, will resume its run tonight, June 5.

The fire, which caused the sprinkler system to activate, was first noticed at 8:50 PM by the theatre's house manager, a spokesman for the show said. The audience filed out in an orderly fashion, followed by the cast members, Jeffrey Wright and Mos Def. The theatregoers and thespians apparently milled about and chatted before an announcement was made that the show would not continue.

Ticketholders were told that they could call Telecharge at (212) 239-6200 to get a refund or reschedule. A temporary box office will be set up in the Ambassador lobby until the permanent one can be repaired.

Topdog/Underdog won the 2002 Pulitzer Prize for Drama and was nominated for a Tony Award.