The 19-year-old pop star was playing the piano when the man jumped onto the stage and grabbed him from behind.
Pop Star Bieber managed to free himself and run to the side of the stage. The man was eventually caught by security guards.
An accompanying tweet said: ‘Whoa. Crazy fan tackled @justinbieber and knocked the piano down the stage. Mayhem.’
Bieber was unhurt, and the band continued the song while the fan was caught and removed from the stage.
He later returned to the stage for an encore performance of his hit songs “Boyfriend” and “Baby.”