Since Zuffa bought the UFC over a decade ago, their home base has been Las Vegas, NV. Each year they hold more events in Vegas and under the Nevada State Athletic commission than any other single location. Friday evening, it was revealed that there's been a bit of a shake up in the ranks of the commission.

Brett Okamoto of ESPN.com announced on Twitter that executive director of the NSAC will be stepping down from his post:

Just received email, Keith Kizer is leaving his role as NSAC executive director for Attorney's General Office effective Jan. 27. — Brett Okamoto (@bokamotoESPN) January 11, 2014

Kizer will continue his duties as executive director until making the move on January 27. As of yet, they do not have a replacement for Kizer, but will begin the search immediately.

The UFC is next set to return to Nevada on February 22 for UFC 170. The event will take place in the Mandalay Bay Events Center and will feature women's bantamweight champion Ronda Rousey seeking her third title defense against Sara McMann.

UPDATE: MMA Fighting got statements from both Kizer and NSAC chairman Francisco Aguilar: