WBO world super flyweight champion Kazuto Ioka had tested positive for doping in December when he defended the title for the second time, sources familiar with the matter said Monday.Ioka's private attorney Masanao Hattori said the 32-year-old, who tested positive for cannabis ingredient, has never taken illegal or illicit drugs.The Japan Boxing Commission consulted with the police after its mandatory test came back positive.Hattori admitted a voluntary questioning of Ioka has taken place, and said in a statement, "I heard the investigation is concluded and understand that he is cleared of …READ FULL ARTICLE