Justin Bieber was attacked while performing at a concert in Dubai.
The encounter was captured on camera by a fan and the video has gone viral.
The clip shows a male running up to Bieber from behind as he sits at a piano singing.
Security immediately tackles the man, in the process knocking over the piano that Bieber was playing.
Bieber was able to move out of the way of the men and the piano tumbling and barely missed a beat of the song.
Mobile users watch the video here: http://bit.ly/18M2h3p