The man who cruelly attacked Leona Lewis during her book signing this week, has been revealed as a jealous X Factor reject.

Peter Kowalczyk, 26, was arrested soon after the event and his father, Tomasz told The Sun that he has since been sectioned. He added:

“He wants to be a singer.

“He went along and queued at X Factor. How far he got with it? Nowhere.”

The incident has badly affected leoan, resulting in her cancelling a promotional tour of Germany. A friend told the newspaper:

“She is petrified it could happen again. They could have a knife or acid next time. She never really had personal security because she never dreamed anything like this would happen.

“Now she wants a 24-hour security team with plain-clothed guards hidden in the crowd when she goes shopping or out with friends.”