Justin Bieber was attacked by a lone fan during his tour stop in Dubai on Sunday. The fan rushed the stage and ended up knocking over a piano before security was able to apprehend him.

The teen-pop singer from Canada, Justin Bieber was in the middle of his hit single, "Believe," when "a man ran on stage...and tried to grab Justin and knocked the piano over" a source tells US Weekly. 

"He was a fan. Security detained the young man. All was fine and Justin continued the show," said the source.

In the footage below, shot by a fellow fan at the show on Sunday night, Bieber as at the piano singing his hit from his third album of the same name, Believe. That's when the out of his mind fan rushed onto the stage to grab him. While running for alarmed security, the fan knocked the piano off the hinges keeping it to the stage; the piano crashed with a resounding thud against the stage in the video.

Bieber and his backing band managed to finish the song despite the interruption, and came back out for an encore performance of his popular hits: "Boyfriend" and "Baby."

Justin Bieber has been making the front pages during his extended European tour to support "Believe." Wearing outrageous outfits, briefly owning a monkey, sporting a gas mask one night, and dancing in his pajamas.

Even with all the sartorial hijinks, and shirt-less trips through airport security, but as recently as April, those headlines centered around his tumultuous on-again off-again relationship with Spring Breakers star, Selena Gomez.

The two appeared to reunite during the Norway stop on his tour. "They have a crazy connection," a source told US of the pair. "They just can't seem to break their connection. It can be intense." 

Initially, Gomez and Bieber called off their teenage romance in December last year, after having what was reported as "another huge fight," during a vacation in Puerto Vallarta, Mexico. At the time, Bieber said he's working on his career at the moment, saying "I'm thinking about my next album, next tour. Or maybe I'll take a break. I'm figuring it out. Isn't that what you're supposed to do at 19?"

The young superstar isn't your typical 19-year-old though, despite his wish to possibly live life as a normal teenager who doesn't have fans attacking him on stage in front of tens of thousands of teenage fans.