Photo: United States Drug Enforcement Administration · Public domain

Born in Mexico · Nationality Mexican — Crime / mafias / terrorism / criminal cases

Samuel Flores Borrego

Documented profile covering 6 controversies, including “Plaza boss in Reynosa and Miguel Alemán and collection of intelligence on police operations” and “Leadership of Gulf Cartel attacks against Los Zetas around Reynosa”.

Are you concerned? Right of reply

Profile No. 2602 · Updated on 12 October 2026

6Documented controversies

7Sources

0Conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

Case · 4 documented stages

Flores Borrego murdered; official hypothesis of internal settling of scores

Case dismissed / dropped

2008-2011

Plaza boss in Reynosa and Miguel Alemán and collection of intelligence on police operations

Formally charged

The 2010 superseding indictment describes Flores Borrego as a senior Gulf Cartel member controlling operations around Reynosa and Miguel Alemán. It also states that he obtained and passed information on certain law enforcement operations to the group.

Attribution: Directly implicated

Sources · 1

[1]
U.S. Drug Enforcement Administration / U.S. District CourtSuperseding indictment describing Gulf Cartel / Los Zetas organizationOfficial documentVery high reliability

Last verified: 15 September 2026

Add to this entry

2009-2011

US prosecution and reward of up to 5 million dollars

Formally charged

US authorities publicly targeted Flores Borrego as a Gulf Cartel leader. The US rewards programme offered up to 5 million dollars for information leading to his arrest, while federal indictments charged him with drug trafficking and cartel-related activities.

State of the evidence: Documented
Attribution: Directly implicated

Sources · 2

[1]
U.S. Department of JusticeAlleged Mexican Cartel Leaders, Associates Targeted in Newest Effort to Combat Drug Trafficking OrganizationsOfficial statementVery high reliability
[2]
Reuters / Thomson Reuters Foundation archiveTop level Mexican drug boss found dead-reportNews agencyHigh reliability

Last verified: 15 September 2026

Add to this entry

2 September 2011

Flores Borrego murdered; official hypothesis of internal settling of scores

Case dismissed / dropped

Flores Borrego's bullet-riddled body was found alongside that of a Tamaulipas police officer in an abandoned vehicle on the Reynosa–Monterrey road. SEDENA and the PGR stated that preliminary evidence pointed to an internal settling of scores within the criminal organisation.

State of the evidence: Documented
Attribution: Protagonist is the victim

Sources · 2

[1]
Secretaría de la Defensa Nacional — Gobierno de MéxicoSEDENA en coordinación con la P.G.R. localizan el cuerpo sin vida de Samuel Flores Borrego “El metro 3”Official statementVery high reliability
[2]
La JornadaHallan muerto a cabecilla del cártel del GolfoPressHigh reliability

Last verified: 15 September 2026

Add to this entry

2007

Cocaine trafficking to United States alleged in federal indictment

Formally charged

A US federal indictment names Samuel Flores Borrego among Gulf Cartel leaders who distributed shipments of at least five kilograms of cocaine in Mexico knowing they would be illegally imported into the United States; two incidents in October and November 2007 are specified.

Attribution: Accused

Sources · 1

[1]
U.S. Drug Enforcement Administration / U.S. District CourtGulf Cartel indictment (September 2008)Official documentVery high reliability

Last verified: 15 September 2026

Add to this entry

2010-2011

Leadership of Gulf Cartel attacks against Los Zetas around Reynosa

No legal proceedings

Following the split with Los Zetas, Flores Borrego was described by authorities as Reynosa's plaza boss directing attacks against Zetas members attempting to regain or enter the area and its trafficking routes to the United States.

State of the evidence: Documented
Attribution: Command responsibility

Sources · 2

[1]
La JornadaHallan muerto a cabecilla del cártel del GolfoPressHigh reliability
[2]
Reuters / Thomson Reuters Foundation archiveTop level Mexican drug boss found dead-reportNews agencyHigh reliability

Last verified: 15 September 2026

Add to this entry

January 2010

Attributed murder of Víctor Peña Mendoza and split between Gulf Cartel and Los Zetas

No legal proceedings

Research sources and anti-drug officials attributed the murder of Víctor Peña Mendoza, a Zetas leader in Reynosa, to Flores Borrego. The episode is generally identified as the immediate trigger for the open split between the Gulf Cartel and Los Zetas.

State of the evidence: Well documented

Sources · 2

[1]
ResearchGate-hosted academic paperViolence on the 'Forgotten' Border: Mexico's Drug War, the State, and the Paramilitarization of Organized Crime in TamaulipasAcademic publicationMedium reliability
[2]
Reuters / Thomson Reuters Foundation archiveTop level Mexican drug boss found dead-reportNews agencyHigh reliability

Last verified: 15 September 2026

Add to this entry

II. Constellation of documented links

No documented link with another published profile for now.

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

III. Has something changed?

A new court decision, a missing source, a mistake? Tell us what should be updated: every request is read by the editorial team.

Support the archive

Controversia checks and updates its profiles independently. Support is optional and has no effect on the content of profiles.

Donate