Marg Helgenberger says Canadian-born singer Justin Bieber was "kind of a brat" when he guest-starred on her show, "CSI," last year.
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"I shouldn't be saying this but he was kind of a brat [on the set,]" the Huffington Post quoted Helgenberger as telling the French magazine Le Grand Direct Des Medias about the 17-year-old pop star.
"He was very nice to me," she said, "but he locked one of the producers in a closet."
The Post said Bieber has a reputation as a prankster and some of his stunts were showcased in his movie "Justin Bieber: Never Say Never."
