Former Ultimate Fighting Championship (UFC) welterweight and current Bellator mixed martial arts (MMA) attraction "War Machine" -- formerly known as Jon Koppenhaver -- is in trouble with the law again, as "Sin City" police are trying to track him down to answer for assault charges.

TMZ has the report:

According to police, War Machine was involved in a 3-person altercation early Friday morning at their home in Vegas. Two of the combatants sustained severe, but non life threatening injuries ... and were taken to a hospital. One of the victims is described as the fighter's "significant other."

While the victim has not been identified, War Machine has been in a volatile relationship with porn star Christy Mack. He was last seen getting choked out by Ron Keslar at the Bellator 104 event last October (GIF). As it turns out, that's the last time he'll be seen for the Viacom-owned promotion.

Bellator President Scott Coker on Friday (Aug. 8, 2014) released an official statement:

"We have a zero tolerance policy here at Bellator when it relates to any form of domestic violence, and after learning of this latest incident involving Jon Koppenhaver, War Machine, Bellator is releasing him from him promotional contract with the organization."

This is not his first dance with Johnny Law.

War Machine was incarcerated on two separate occasions following his release from UFC. After doing a year for assault, he was sent back to the slammer for "some old B.S." that was apparently unresolved by the courts. He eventually got out, but could be headed right back in, depending on the validity of today's report.

Mack's only social media correspondence for the day:

Stay tuned for more updates to this still-developing story, as they become available.