AceShowbiz -

Turns out, Justin Bieber passed out on the way to his dressing room after knocking his head against glass wall at his Paris, France concert earlier this month. Shown on the first part of NBC special "All Around the World" is a video footage of the pop star collapsing on a flight of stairs.

Bieber accidentally hit the glass wall while exiting stage after performing "Be Alright". Looking a bit hurt, he fell down and was carried by his bodyguards en route his changing room. His manager Scooter Braun said, "He was unconscious for like, 4 or 5 minutes." Fans would later find out that he suffered concussion.

After regaining composure, Bieber went on with the concert. Bieber tweeted at that time, "Just smacked my head and needed some water. I'm Canadian. We are tough. lol. It's all good. Just gotta take it easy the rest of the night."

This is not the first time that he hit a glass. He was was caught on camera walking into a revolving glass door in May 2010. Bieber maintained the humor of it all, joking "I will see u again glass. I will have my revenge. Bieber vs glass. MGM Las Vegas 2013. LOL. Gotta Laugh At Yourself."