Celebrity Leona Lewis Attacker Charged "Fan" Peter Kowalczyk will have to appear in a London court Oct. 26 after allegedly punching the singer By Michael Y. Park Published on October 15, 2009 03:00 PM Share Tweet Pin Email Photo: Shawn Ehlers/WireImage A 29-year-old “fan” was charged Thursday with assault and placed in an area for prisoners with mental-health issues after punching singer Leona Lewis at a book signing in London Wednesday, police say. Peter Kowalczyk 29, allegedly punched Lewis, 24, in the head as she was signing copies of her autobiography, Dreams, at a bookstore in London’s Piccadilly area. The south London resident will appear in court on Oct. 26. Leona ‘Hurt and Upset’ Following Attack On Thursday, Lewis, who didn’t require hospitalization, wrote about the bizarre incident on her Web site. “Yesterday was a horrible shock and left me extremely hurt and upset,” she wrote. “I’m very sorry to those I wasn’t able to meet at the signing.” Lewis had been scheduled to appear on a BBC program that night, but pulled out after the incident.