The UFC announced yesterday that Light Heavyweight Joey Beltran failed a post-fight drug test following his UFC on FX 6 in over Igor Pokrajac. Beltran came up positive for the banned substance nandrolone and will be suspended for nine months. The test was conducted by the promotion in the absence of an Australian governing body that regulates the sport.

Beltran took to Twitter to respond:

I can say without a shadow of a doubt I did not inject Nandrolone into my body. I am sorry to my family and friends for the shame this…

— joey beltran (@mexicutioner760) January 11, 2013

Brought to any of you. I promise soon the whole story will be told and I will go through whatever is necessary to find the reason for this..

— joey beltran (@mexicutioner760) January 11, 2013

Positive test. I am at fault for taking a supplement or perhaps combination of something that caused my test result. My team and I will …

— joey beltran (@mexicutioner760) January 11, 2013

Seek the truth. I am sorry once again and truly apologize to the people that matter the most to me.- Joey Beltran

— joey beltran (@mexicutioner760) January 11, 2013

Looks like he's taking the old, "must've had something bad in my supplements and not realized it" defense.

SBN coverage of UFC on FX 6