Justin Bieber allegedly swore at a television show's floor manager while appearing on a breakfast program during a recent trip to Australia.

News.com.au reports the Canadian singer was being shown towards the studio floor to perform his hit song Baby on the Sunrise show when the incident is said to have happened.

David Koch, who hosts the program, made the revelations in a radio interview, saying: “Our floor manager was directing him to where he was about to perform and he turned around to Nick and said ‘Don't ever f***ing touch me again', and Nick went ‘What?'

“And then his sound guy, his audio guy said, ‘Don't take offence mate, he tells us that all the time',” Koch said.

“So I was a little disappointed in that ... I thought maybe someone needs to drag you aside and give you a bit of a slap.”

Bieber took to Twitter to respond, posting: “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.”