Reports say Justin had told radio station Power 106 in Los Angeles, California, on Tuesday:
When the radio hosts reacted in shock/surprised, Justin backtracked slightly suggesting he has not quite made up his mind:
'I want to grow as an artist and I'm taking a step out, I want my music to mature.'
TMZ, however, says a source confirmed to them that the 19-year-old was just joking and has no plans to permanently hang up his microphone.
Justin's talk of retirement is coming a day before his documentary Believe is premiered in Los Angeles.