Five Ounces Of‘s Sam Caplan reports former UFC welterweight competitor Jon Koppenhaver — subject of a recent David Roth post — has run afoul of…well, a very tough citizen

Jay Rivera, a representative with the Public Information Office of the Metro Police Department, confirmed that Jonathan Paul Koppenhaver was arrested Saturday, February 8 at approximately 4 a.m. local time. According to Rivera, a citizen™s arrest was made.

Known for his often-erratic messages left via his official MySpace account, Koppenhaver recently was released by the Bellator Fighting Championships following a blog in which he endorsed a potential assassination of United States President Barack Obama.

Koppenhaver, 6-2, had been signed by Bellator as a participant in its upcoming eight-man welterweight tournament, which is scheduled to commence in April.

The current Las Vegas resident had also been released from his contract with the UFC after reportedly turning down a fight against Brandon Wolff and then also publicly speculating about the death of former UFC middleweight champion Evan Tanner.