Justin Bieber attacked on stage by fan
The incident took place Sunday night when the 19-year-old pop star was performing one of his last songs, 'Believe'.
"A man ran on stage during 'Believe' and tried to grab Bieber and knocked the piano over," a source close to the singer told a website.
"He was a fan. Security detained the young man. All was fine and Bieber continued the show," he added.