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FBI sanctions listing

EFREN CALDERAS-MEZA

high risk FBI · FBI — Violent Crime - Murders Person
List-based indicator — from authority, programme severity & linked parties.

EFREN CALDERAS-MEZA is an individual designated on the U.S. Federal Bureau of Investigation — Wanted (FBI) sanctions list under the Violent Crime - Murders programme, listed on 2022-04-06. Violent Crime - Murders. This page summarises the public designation — known aliases, Mexican nationality, identifying particulars, the stated reason for listing and linked parties — alongside an independent, transparent risk indicator.

Reason for listing

Unlawful Flight to Avoid Prosecution - Homicide Efren Calderas-Meza is wanted for his alleged involvement in the stabbing death of a female victim. During the early morning hours of December 8, 1986, Calderas-Meza allegedly stabbed the woman multiple times during a domestic violence incident. The two allegedly had a violent altercation while behind the Oasis Tavern located on Plumas Street in Yuba City, California. Emergency responders transported the female victim to the hospital, but she succumbed to her injuries and died. A no-bail arrest warrant for Calderas-Meza was issued by the California Municipal Court, Sutter County, on February 11, 1987, after he was charged with homicide. A federal arrest warrant for unlawful flight to avoid prosecution was issued for Calderas-Meza in the United States District Court, Eastern District of California, Sacramento, California, on February 14, 2022. The FBI is offering a reward of up to $20,000 for information that leads to the arrest of Efren Calderas-Meza.

Statement of reasons as published by US FBI. This is the issuing authority's wording, reproduced for reference.

Designation record

List / authorityUS FBI (FBI) — FBI — Violent Crime - Murders
Entity typePerson
Programmes / regimeViolent Crime - Murders
Date listed2022-04-06
Source record IDfbi:43ac9ff2444f46aebcfa7243470ec27e
Last updated (our copy)2026-06-04

Identity & particulars

Position / roleViolent Crime - Murders
Date of birthJune 18, 1954; June 18, 1955
Place of birthNayarit, Mexico
Nationality / countryMexican
GenderMale

Known aliases (7)

A variety of spellings and variations of his true nameEfrain Meza CalderasEphraim Meza CalderasGorque DiazJorge Diaz-GarciaPedro MezaRoberto Alvidres

Deep-research dossier

Not yet deep-researched

The instant review above is drawn from the public lists. A deep-research dossier goes much further — an analyst-grade OSINT report: associate & co-investment network screening, structural / ownership opacity, a dated risk trajectory, an 8-factor scoring model, and numbered, source-linked evidence. See the format in the design system.

Standard depth · 3 credits

Clarifications & right of reply

Are you EFREN CALDERAS-MEZA, or an authorised representative?

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Source & provenance

Issuing authorityU.S. Federal Bureau of Investigation — Wanted
Source identifierfbi:43ac9ff2444f46aebcfa7243470ec27e
Aggregated bySanctiometer (independent) — verify against the issuing authority's official list before acting.

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