Check out this excerpt of an arcticle found at FightOpinion.com:

J-ROCK, the management team of Kazuhiro Nakamura, fired back at the California State Athletic Commission in the Japanese press on Thursday. The company released a statement on behalf of Nakamura, denying that he was guilty of using marijuana and that they are appealing the ruling. They want a drug test re-examination and are considering the current ruling a mistake. (In the statement, J-ROCK claims that they talked to Nakamura after the news of the failed drug test came out. Nakamura stated that he had no motive whatsoever for using marijuana and has not used marijuana.)