Former UFC/Strikeforce middleweight Jason 'Mayhem' Miller was arrested on suspicion of burglary Monday night by the Orange County (Calif.) Sheriff's Department, spokesman Jim Amormino told ESPN.com.
Deputies say they found Miller naked on a couch inside Mission Hills Church in Mission Viejo, Calif. after the church had been broken into and vandalized.
"When officers arrived they saw books and CDs thrown all over the place and broken picture frames on the floors," Amormino said. "Retardant from a fire extinguisher was sprayed along the church walls.
"Several of the church's windows were broken."
Miller is expected to be formally charged Tuesday morning. His bail has been set at $20,000.
TMZ.com first reported Miller's arrest.
Members of the church had informed the sheriff's department that a window had been broken on Saturday evening.
"That window had been boarded up," Amormino said. "The board was removed, but we don't know if Miller is responsible or entered the church through that opening."
Miller (28-9 with one no-contest) was released by UFC in May following a unanimous-decision loss to C.B. Dollaway.
It was his second loss in a row since returning to the promotion.
Miller made a bid for the vacant Strikeforce middleweight title in November 2009, but came out on the short end of a unanimous decision to Jake Shields.