BAKERSFIELD, Calif. (KFSN) -- The Bakersfield Police Department is now taking the lead on the months-long search for two missing boys in Kern County.
Brothers Orson West, 3, and Orrin West, 4, were reported missing on Dec. 21 in California City.
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Jacqueline and Trezell West, their adoptive parents, said the boys vanished from the backyard, possibly roaming into the California desert.
RELATED: Search continues for missing California toddlers who disappeared days before Christmas
Investigators say the new leadership in the case comes as detectives uncovered new facts in the boys' disappearance.
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The police department's officers have executed more than 20 search warrants at homes in Bakersfield and California City so far.
The reward, initially offered at $30,000 by extended members of the West family, has increased to $120,000 -- contributed by multiple parties.
RELATED: Reward increases to $120K for missing CA toddlers; family says they're public targets