Federal forces arrested Yanet Dowden, a 21-year-old U.S. citizen, during a security and surveillance operation carried out on September 11, 2026, near the border crossing in the municipality of San Luis Río Colorado, Sonora.
The Security Cabinet identified the woman as a mid-level logistics operative within the “La Mayiza” faction of the Sinaloa Cartel, led by Ismael Zambada Sicairos, alias “El Mayito Flaco.”
According to reports from national authorities, the detainee was directly involved in the transport, trafficking, and importation of weaponry and military-grade materiel from Arizona, USA, into Mexican territory.
The investigation determined that Dowden’s U.S. citizenship was a key operational asset for the criminal group; her legal status allowed her to make frequent border crossings at international checkpoints without triggering immediate alerts during immigration screening.
Her role was to serve as a liaison between arms suppliers in the U.S. and the distribution network based in Sonora—a region designated by security agencies as a strategic route for the flow of military-grade materiel.
The arrest resulted from an operation coordinated by the Secretariat of the Navy (SEMAR), in conjunction with the Secretariat of National Defense (SEDENA), the Attorney General’s Office (FGR), the National Guard (GN), and the Secretariat of Security and Citizen Protection (SSPC), as part of the Federal Government’s Security Strategy operations.
An Arizona Department of Corrections, Rehabilitation and Reentry ID card, issued in the detainee’s name and certifying her as a Level II correctional officer. Authorities established official communication to verify the authenticity of the seized official ID and determine whether the detained individual held an active employment relationship with the U.S. correctional institution in question.
Furthermore, investigative intelligence and surveillance efforts revealed that Dowden had displayed the same Jeep—which was seized during the operation—on social media, referring to the vehicle as a personal achievement.
She also posted images of the weaponry she was transporting for the faction led by Ismael Zambada Sicairos; this digital trail was utilized by federal forces to pinpoint her location and subsequently arrest her.
The Security Cabinet estimated that the monetary value of the live ammunition and the seized vehicle represents a financial and operational blow of 1,655,019 pesos to the criminal organization. Agencies emphasized that the operation aimed to diminish the criminal cell’s firepower and prevent acts of violence along the border region.
Following the arrest, federal officers informed the suspect of her legal rights and placed her—along with the seized vehicle and ammunition—at the disposal of the Federal Public Prosecutor’s Office to initiate the corresponding investigation and determine her legal status.
