A man has been arrested for assaulting British singer Leona Lewis at a book signing in central London this afternoon. The “Bleeding Love” songbird was slapped by an unidentified man during a signing session for her autobiography, Dreams on Wednesday.

Leona’s spokesman says the singer is “understandably badly shaken” after the attack.

“Leona was a victim of an unprovoked attack this afternoon at her book singing,” the rep said in a statement. “The police were called immediately and medical attention has been sought. Leona’s understandably badly shaken and apologizes to the fans she was unable to meet and complete signings for.”

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