By Steve Kim & Rick Reeno

BoxingScene.com first reported on Friday that lightweight/junior welterweight contender Ray Beltran (30-7-1, 18KOs) failed his post-fight drug test, stemming from his second round blowout of Takahiro Ao on May 1st at the Cosmopolitan in Las Vegas.

Beltran was set to face Ao for the vacant WBO lightweight title, but failed to make weight and the fight went ahead after a deal was reached between both parties.

Because Beltran is now facing a suspension from the Nevada State Athletic Commission, his upcoming HBO televised fight with Humberto Soto is now off. Beltran-Soto was set to take place on June 27th as the co-featured fight to Tim Bradley vs. Jessie Vargas at the StubHub Center in Carson, California.

BoxingScene has since been notified by multiple sources that Beltran tested positive for the anabolic steroid stanozolol [commonly sold under the name Winstrol].

VADA [Voluntary Anti-Doping Association] was retained to handle the random drug testing protocol for Beltran's fight with Soto. VADA was notified on Friday afternoon that Beltran-Soto was off, so neither fighter had a chance to enter their program.

At the present, there are ongoing discussions for Soto to potentially remain on the card against a new opponent. One fighter who was contacted for the task was undefeated junior welterweight contender Antonio Orozco, who was unable to accept because he's still healing a cut that he suffered in his May 15th victory over Emanuel Taylor.