LOS ANGELES, Aug. 13 (UPI) -- Duane Chapman, aka Dog the Bounty Hunter, has vowed to track down War Machine.
The 61-year-old reality star issued a 24-hour ultimatum to the 32-year-old MMA star Monday night, and is now actively seeking the fighter to bring him to justice. Jonathan Koppenhaver, who legally changed his name to War Machine in 2008, is accused of brutally assaulting his girlfriend, porn star Christy Mack.