Brock Lesnar has just informed the UFC that he will be retiring from professional MMA. The former UFC heavyweight champion was suspended by the US Anti-Doping Agency and the Nevada Athletic Commission for a year after he failed two drug tests during UFC 200 and was no longer an active member of the UFC roster.

According to MMA Fighting, Lesnar informed the UFC of his decision to retire as he plans to focus more on his professional wrestling career in the WWE. He is scheduled to face Bill Goldberg at Wrestlemania 33 in Orlando, Florida. The 39-year old Lesnar has not made any statements beyond his retirement announcement.

Lesnar's suspension would have ended this July during which he would be eligible to compete in the Octagon once again. His last match in the UFC was against Mark Hunt, a fight which he had originally won via unanimous decision. However, the result of the bout was overturned to a "No Contest" after Lesnar failed two drug tests.

Hunt would then file a civil suit against the UFC, UFC president Dana White, and Lesnar accusing the party of having "affirmatively circumvented and obstructed fair competition for their own benefit." Hunt was seeking financial compensation for what he believes were damages caused to him and his brand, according to an earlier report from ESPN.

In his prime, Lesnar was a marquee attraction for the UFC and proceeded to beat some of the company's greatest stars, including a win over Randy Couture at UFC 91 in 2009 wherein he became the UFC heavyweight champion. Lesnar finished off his MMA career with a record of 5-3, 1 NC (no contest) and despite having a relatively short career in the UFC, he was still able to accomplish so much. Lesnar has denied knowingly taken any banned substance, but his public comments on the matter have been pretty minimal.