Is Justin Bieber a Diva Off-Camera?

Is Justin Bieber's young and innocent demeanor just an act? Some are saying the tween pop star behaves like a diva off camera.  INSIDE EDITION has the story.

Is 16-year-old Justin Bieber turning into a prima donna?  That's what a TV host is saying after the pop idol appeared on his show in Australia.

"Our floor manager was directing him to where he was about to perform and he turned around and said, 'don't ever (expletive deleted) touch me again'. 'Um,' Nick went, 'what?!?'  And then his sound guy, his audio guy, said, 'mate, don't take offense, he tells us that all the time.'  So I was a little disappointed in that," the TV host said.

The incident occurred when Justin appeared on Sunrise, a popular morning show in Sydney, as thousands of screaming teenage girls cheered him on. But now the host, David Koch, is telling a radio show that behind the scenes Justin had a filthy mouth.

"I was a little disappointed in that.  I thought, 'maybe someone needs to drag you aside, and give you a bit of a slap,'" Koch said.

Justin is denying the report on his Twitter page he wrote, "I was raised to respect others and not gossip...nor answer gossip with anger. I know my friends, family, and fans know the person I am. Hearing adults spread lies and rumors is part of the job, I guess."