By Sierra Marquina

TMZ‘s Harvey Levin phoned in to  “On Air with Ryan Seacrest” to reveal new details on Justin Bieber.

After collapsing on stage during a London concert and being hospitalized as a precaution, the singer is reported to be following through with his London O2 arena concert this evening in London.

Harvey revealed: “This just happened but he went nuts on a photographer. He got into an SUV and there was a photographer who was being a jerk…and Justin jumped out of the car and went crazy. 

Justin soon took to Twitter to discuss the matter himself, tweeting: “Ahhhhh! Rough morning. Trying to feel better for this show tonight but let the paps get the best of me…”

Feel better, Biebs! For more from Harvey, listen below.

Photo: Getty Images