The 20-year-old 'Story Of My Life' hitmaker, whose pictures emerged sporting a cast and crutches at Heathrow airport, took to his micro-blogging site account to tell his 16.7 million followers to give him privacy as he tries to recover, reported Daily Mirror.
"Hey guys I know most of you have seen those pics today! Yes I've had major surgery, a much larger surgery than first anticipated, but I would like to tell you, it was a complete success! Considering the scale of it!" he wrote.