An immigrant, combat veteran and Republican, Lt. Oscar Martinez to challenge incumbent sheriff in deep blue L.A. County.

LOS ANGELES -- In February, Los Angeles County Sheriff's Deputy Trevor James Kirk ... are boycotting the annual 120-mile Baker to Vegas Challenge Cup Relay, a race for law enforcement members ...

A lieutenant at the Palmdale station announced this week that he will challenge Los Angeles County Sheriff Robert Luna in the primary election, becoming the first opposition candidate in a race ...