Kang, who became the first Indian javelin thrower to reach the final round of a World Championships last week in London, returned positive for marijuana in an in-competition test conducted by NADA during the Indian Grand Prix in May 15.
He was not handed a provisional suspension as it was not mandatory under WADA rules.
"I did not know what to do. I cried at my room but after taking advice from some people I decided to compete in the qualification round and I became the first Indian javelin thrower to qualify for the final round," he added.
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"He (Kang) tested for metabolites of marijuana. It did not attract mandatory suspension and it was optional to be exercised by the athlete. NADA informed us to ensure that he appears before the NADA panel for hearing," Sumariwalla said.
"We requested him (Kang) to exercise the option of provisional suspension and we have the power to do that under the rules. Moreover, we thought it is better for him to remain within the purview of NADA."
"He was picked in the team despite his doping case but we made a request to him. I don't know this claim of mental torture, harassment etc. He failed a dope test and we simply requested him to drop out by exercising the option of provisional suspension," he said.
"He (Kang) will be tested by the IAAF and in that case we cannot do anything. If it again returns positive, it will bring shame to the country at the international stage," he added.
"I was having a lot of bleeding and my body temperature was extremely high. I used allopathic as well as local medicines prepared by quakes. But the problem persisted. Then at last my friend gave me some another local medicine. I did not know that it was mixed with 'bhang'," he said.
"But I have been told that marijuana does not enhance performance. I did not take it intentionally and moreover it (marijuana) does not enhance performance. But it has been made out as if I have murdered somebody."
"I took advice from athletes from outside the country through Facebook. I also took advice from Inderjeet Singh. He (Inderjeet) told me not to drop out. He said nothing will happen," said Kang.
"I have been in WADA list in the last two years, I have been giving dope samples many times and all of them have been negative. I have been tested at the national camp, every time I won national level medals I have given tests. This one happened due to mistake. I committed mistake but I did this without knowing.
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