Kelly Conlon was chaperoning a group of Girl Scouts to see the Rockettes Christmas Spectacular at the Radio City Music Hall theatre.

“It was pretty simultaneous, I think, to me, going through the metal detector, that I heard over an intercom or loudspeaker. I heard them say ‘woman with long dark hair and a grey scarf,’” Ms. Conlon told WNBC.

She was forced to wait outside in the rain for the duration of the event.

Ms Conlon works at New Jersey law firm Davis, Saperstein & Salomon, which is currently involved in a personal injury case against a restaurant owned by MSG Entertainment, the owner of Radio City Music Hall.

“They said my firm was on the attorney exclusion list and escorted me out,” Ms Conlon told the New York Post.

The company told the Post in a statement: “MSG instituted a straightforward policy that precludes attorneys from firms pursuing active litigation against the Company from attending events at our venues until that litigation has been resolved.”

“All impacted attorneys were notified of the policy, including Davis, Saperstein & Salomon, which was notified twice,” it stated.