LAS VEGAS >> Las Vegas police say a former UFC fighter is the primary suspect in a domestic dispute that resulted in serious injuries.

Police are searching for Jonathan Koppenhaver, who appeared in UFC’s Ultimate Fighter TV show in 2007.

Investigators say two people, including his “significant other,” suffered serious but non-life threatening injuries in the dispute early Friday morning.

Koppenhaver legally changed his name to War Machine in recent years, but police referred to him by his birth name.

The 4 a.m. dispute is under investigation.