MTV report, “The pop megastar was provoked into his outburst by a photo on US gossip site TMZ which apparently showed him with a bottle of codeine cough syrup – used as a recreational drug in the US and known as ‘sizzurp’.”

Justin wrote, “Some of these rumours about me are getting a little out of control now. dont believe the bs.

“gonna focus on the positive. i understand that rumours come with the territory but im gonna stay me.

“focus on the music. u wanna know what im about…it is all right there. #BELIEVEacoustic.”

But of course, cough syrup-gate isn’t the only scandal dogging Bieber right now as in just a couple of weeks, he’s been accused of groping a fan – when a picture of him apparently touching a girl’s boob surfaced – and he’s been angered by pictures of him smoking turning up in the media.