Jake Shields vs. Ed Herman overturned to no-contest, Shields fined by commission

A few days ago, Jake Shields' management sent out a press release that contained an apology from the former Strikeforce middleweight champion for a positive test after his UFC 150 win over Ed Herman. Today, the Colorado State Athletic Commission officially overturned the fight and made it a no contest, and fined Shields in addition to his suspension (via MMA Fighting):

In addition to the six-month suspension retroactive to the day of his UFC 150 bout (Aug. 11), Shields must pay a $5,675 fine. While the fine for his infraction is $5,000, he's also been ordered to pay a 10 percent 'additional surcharge' by the Executive Director of the Department of Regulatory Agencies. Shields must further pay $175 related to administrative costs incurred by the testing company. He has fourteen days to meet those financial obligations as of Monday, October 15th.

What he actually tested positive for still hasn't come to light. Zuffa also issued a statement in regards to the suspension and fine:

We’ve been informed by the Colorado Department of Regulatory Agencies’ Boxing Commission that Mr. Shields tested positive for a banned substance following his bout at UFC 150. UFC has a strict, consistent policy against the use of any performance-enhancing drugs, including the requirement that all incoming athletes be tested and cleared for PEDs. Therefore, we fully support the drug testing efforts of the Colorado Department of Regulatory Agencies’ Boxing Commission and will fully cooperate with the Commission regarding this matter.

His suspension will be up on February 11th, one week after fellow Cesar Gracie fighter Nick Diaz's suspension will end.