Heavyweight World Champion, Tyson Fury has announced his retirement from boxing following series of controversies on reports of his positive test for cocaine.

“Boxing is the saddest thing I ever took part in, all a pile of shit, I’m the greatest, champ; I’m also retired…” Fury tweeted on Monday.

There had been reports that the British boxer tested positive for cocaine last week.

Fury tested positive after providing a urine sample to Las Vegas-based Voluntary Anti-Doping Association in Lancaster, England on September 22.

Fury was billed to defend his WBA and WBO heavyweight titles against Wladimir Klitschko, however, the Briton cancelled the bout stating that he was “declared mentally unfit to fight”.

The boxer may be stripped of his titles if found guilty at his hearing in November.

Azeez