Justin Bieber grabbed onstage by male fan at Dubai concert [VIDEO]

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Justin Bieber was performing during the Dubai leg of his "Believe" tour when an overly enthusiastic fan rushed onstage, Us Weekly reported Sunday. Concert security tackled the fan, who knocked over Bieber's piano in the process.

"A man ran on stage during 'Believe' and tried to grab Justin and knocked the piano over," a source close to Bieber told Us Weekly. "He was a fan. Security detained the young man. All was fine and Justin continued the show."

According to The National, the young fan was wearing a white shirt and jeans when he rushed on stage to disrupt the show. After three minutes, the 19-year-old pop star continued playing as if nothing happened.

Tech investor Chris Sacca also captured Vine video of the subsequent "mayhem":

Whoa. Crazy fan tackled @justinbieber and knocked the piano down the stage. Mayhem. vine.co/v/b2uVHAJn0je

— Chris Sacca (@sacca) May 5, 2013