An innocuous book signing in London turned into something altogether different for Leona Lewis yesterday (Oct. 14). The singer was autographing copies of her autobiography, Dreams, at a branch of the Waterstone’s chain in central London when a man jumped out of the line and punched her.

Police arrested the man shortly after the incident took place, and because nothing goes unfilmed these days, some shaky-cam YouTube footage has emerged (below). It’s difficult to tell what exactly happened from that shot, but one fan at the scene has offered an eyewitness account:

"[Lewis] was running out with her hand over her eye and I just saw a man on the floor," the fan said. "Suddenly the security all jumped on him and they were trying to pull him out and he was just laughing, he thought it was funny." A spokesperson for Lewis has issued the following 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."

[NME]