MISSION VIEJO, Calif.—Orange County sheriff's say thieves have ransacked a Mission Viejo home to steal more than $200,000 worth of jewelry, cash and more than a dozen guns, many of them gold-plated.

The Orange County Register reports ( http://bit.ly/Wo0JGF) investigators believe the suspect or suspects forced their way into the home sometime Wednesday morning by breaking into a back window.

Spokesman Jim Amormino says two AR-15 assault rifles and 15 handguns were in a large gun safe that was pried open. The guns were restored firearms, most of which were gold-plated.

The home's residents say they believe they were randomly targeted.