For some time now it’s been known that there was an issue with a drugs test UFC light-heavyweight fighter Thiago Silva gave prior to UFC 125 on January 1st, but until now no further details had been released.

Today Keith Keizer of the Nevada State Athletic Commission revealed to MMAJunkie that Silva is believed to have given a sample that was, “inconsistent with human urine.”

Silva’s original ‘A’ sample was initially flagged, and then a further ‘B’ sample confirmed the original findings.

As a result Silva is now out of action until a hearing on the 7th of April when he’ll go before an NSAC hearing, and faces the possibility of a suspension, fine, and his victory over Brandon Vera at the event overturned to a no contest.

The UFC are believed to have known about the situation for some time, resulting in Silva being withdrawn from his fight with Quinton ‘Rampage’ Jackson at UFC 130 in May, while Brandon Vera, who had been cut from the promotion after his loss to Silva, has now been reinstated.