0307_bieber_singleJustin Bieber was rushed to a hospital after collapsing during a concert at the 02 Arena in London on Thursday.

A source close to Justin told TMZ the 19-year-old felt woozy during the show. With four songs to go, he stumbled backstage where he collapsed. Justin was reportedly pulled into a private room where he was treated with oxygen from emergency personnel.

Justin was advised to go the hospital but declined,  insisting that he "had to finish the show for his fans."

After the incident, Bieber's rep Scooter Braun came out and told the crowd Justin was "very low of breath."

Justin was transported to the hospital right after he completed his concert.

Sources tell TMZ he is feeling okay but doctors are still evaluating his condition.

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