Singer Justin Bieber was attacked by a fan at his show here but security guards intervened and prevented the incident from disrupting the event Listen to this article Justin Bieber attacked on stage by fan x 00:00 u00a0 The incident took place Sunday night when the 19-year-old pop star was performing one of his last songs, 'Believe'. Read More Justin Bieber "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. u00a0 "He was a fan. Security detained the young man. All was fine and Bieber continued the show," he added. "Exciting news! Mid-day is now on WhatsApp Channels Subscribe today by clicking the link and stay updated with the latest news!" Click here!