Canadian pop tyke Justin Bieber has added to fuel to the rumours of his impending retirement when grilled on the subject at the premiere of his 'Believe' movie.

While Team Bieber have maintained that Justin was "just joking" when he said in a radio interview that he was thinking of calling it quits, J-Biebs himself doesn't seem so sure.

Interviewer Christina Garibaldi asked the teenager to elaborate on his retirement "joke", as she put it, to which Bieber remarked: "I don't know if that's a joke. I don't know. I don't know."

Earlier, Bieber's manager Scooter Braun suggested that his client's retirement was merely going to be a "short break" to recharge his batteries, before saying that Bieber will soon be back in the studio "where he likes to be."

And what exactly will Bieber do during his retirement/rest? "I want to get to know my family more", he said. "I've been away so much, I've missed a lot of great years with my brother and sister."