NarcoWatch - 13 March 2026

A major Sinaloa Cartel faction led by "Mayito Flaco" announced a strategic truce with the Chapo Isidro organization to consolidate forces against "Los Chapitos," ceding territory to end a two-year conflict [1]. This internal realignment comes as both major Sinaloa factions are reportedly arming themselves with advanced weaponry, including anti-drone systems, amid paranoia over a potential U.S. military strike following recent aggressive rhetoric from President Trump and the formation of a 17-nation counter-cartel coalition [11, 12, 19]. Meanwhile, the Cartel Jalisco Nueva Generación (CJNG) continued its violent campaign against state forces, employing explosive-laden drones and IEDs in Zacatecas and staging ambushes in Michoacán [2, 14, 15].

Significant Incidents of Interest

• Sinaloa Cartel Factions Announce Peace Accord and Territorial Division: A communiqué circulating on social media announced a peace agreement between the Sinaloa Cartel faction led by Ismael Zambada-García's son, "Mayito Flaco," and the organization of Fausto Isidro Meza Flores, "Chapo Isidro." After a nearly two-year war against the "Los Chapitos" faction, "La Mayiza" (which includes leaders "El Aquiles," "La Rana," and the Cabrera family) has ceded control of Navolato to the Fuerzas Especiales Avendaño (FEA) and El Dorado to a narco known as "Joaquín." The stated goal is to bring peace to Sinaloa and consolidate their front against Los Chapitos, whom they accuse of abuses and extortion. The agreement promises to eliminate kidnapping, extortion, and theft in their territories and to reduce homicide rates and car thefts [1]. This represents a significant strategic realignment within the Sinaloa Cartel's internal power struggle, potentially stabilizing certain areas while intensifying conflict in others.

• Sinaloa Cartel Arms for Potential US Military Intervention: Both the "Los Mayos" and "Los Chapitos" factions of the Sinaloa Cartel are reportedly stockpiling weapons and reinforcing defenses in response to perceived threats of a U.S. military strike. This newfound paranoia was reportedly triggered by President Trump's aggressive rhetoric, his formation of the "Americas Counter Cartel Coalition," and televised images of the U.S. raid in Venezuela. In response, the cartel has acquired sophisticated weaponry, including rocket-propelled grenades and drone jammers costing up to $40,000 each, and has deployed additional lookouts in the Sierra Madre mountains to watch for suspicious aircraft and vehicles [11, 12, 19]. This tactical shift indicates the cartel is taking U.S. threats seriously and investing in technology that could complicate future counter-narcotics operations.

• CJNG Escalates Attacks on Security Forces with Drones and IEDs: CJNG has continued its campaign of aggression against security forces in central Mexico using increasingly sophisticated tactics. In Zacatecas, the cartel carried out an IED attack against a unit of the Fuerza de Reacción Inmediata Zacatecas (FRIZ) [2]. In a separate incident on March 10 along the Zacatecas-Aguascalientes border, CJNG operatives attacked state police with both firearms and explosives dropped from a drone [14]. In Michoacán, CJNG gunmen ambushed a Guardia Civil patrol in Salvador Escalante, injuring an officer and subsequently burning multiple civilian vehicles on major highways to block the arrival of reinforcements [15]. These attacks underscore CJNG's reliance on terror-style tactics to disrupt security operations and exert control in contested territories.

• Major Fentanyl Lab Dismantled in Colima Following US Intelligence: Acting on intelligence shared by the U.S. Drug Enforcement Administration (DEA), Mexican authorities dismantled a significant fentanyl production operation in Villa de Alvarez, Colima. The raid on a clandestine lab and warehouse led to the arrest of Yair "N," an alleged cell leader, along with six other individuals. Authorities seized approximately 270 kilograms of fentanyl in both powder and pill form, estimated to be equivalent to 14 million doses [4, 8]. The seizure highlights the continued success of bilateral intelligence sharing and confirms Colima's role as a major hub for synthetic drug production and trafficking.

• CJNG Co-Founder "El 85" to Plead Guilty in US Federal Court: Erick Valencia Salazar, alias “El 85,” a co-founder of the CJNG and former associate of Nemesio “El Mencho” Oseguera Cervantes, has agreed to plead guilty to drug trafficking charges in a Washington D.C., federal court on April 7, 2026. Valencia Salazar, who was extradited to the U.S. in February 2025, founded the rival Cártel Nueva Plaza after a falling out with "El Mencho," sparking a wave of violence in Guadalajara. His plea agreement may include cooperation with U.S. authorities in exchange for a reduced sentence, potentially providing valuable intelligence on the CJNG's command structure and operations [7].

• El Mencho's Death Triggers CJNG Retaliation Campaign: The February 22 death of CJNG leader "El Mencho" during a military operation sparked widespread retaliation across Jalisco, including attacks on National Guard bases and blockades of nearly 100 roads, killing 74 before normalcy returned to Guadalajara. Mexico responded by deploying 100,000 security personnel for World Cup protection, including 20,000 troops and advanced equipment. Despite hosting a friendly match against Iceland without incident, mounting international concerns have prompted Germany's tourism coordinator to demand FIFA safety guarantees, Jamaica's Soccer Federation to express nervousness about Guadalajara matches, and Portugal to closely monitor developments. Several nations are reconsidering preparation plans as the unprecedented security challenge threatens the tournament [3].

DTO Activity and Tactics

New or Adapted Tactics

• Strategic Territorial Cession: In a novel move, the "La Mayiza" faction of the Sinaloa Cartel publicly announced it was ceding control of the valuable Navolato and El Dorado plazas to the Chapo Isidro organization. This was done to formalize an alliance and consolidate forces for their ongoing war against the "Los Chapitos" faction [1].

• Advanced Defensive Armament: The Sinaloa Cartel is actively acquiring sophisticated defensive weapons, including anti-drone jammers and rocket-propelled grenades, specifically to counter a potential U.S. military operation [11, 12].

• Combined Arms Assaults: CJNG is employing coordinated attacks against security forces that combine direct fire from gunmen with explosives delivered by improvised explosive devices (IEDs) and drones [2, 14].

• Systematic Use of Roadblocks: Following attacks on law enforcement, CJNG operatives in Michoacán systematically hijack and burn civilian and commercial vehicles to create roadblocks on key highways, a tactic designed to impede the arrival of reinforcements and facilitate their escape [15].

• Civilian Pressure Groups Leading to Arrests: In Tijuana, groups of searching mothers investigating disappearances identified and confronted a suspected CJNG operator known as "La Tía." Their pressure on authorities led to verification of an active arrest warrant and her subsequent detention for the disappearance of at least six youths in 2025 [17, 18].

Geographic Trends

• Sinaloa: Remains the epicenter of the Sinaloa Cartel's internal war, leading to strategic territorial shifts in Navolato and El Dorado [1]. Security forces continue to engage cartel cells, such as the 'Fuerzas Especiales 80 y 81' linked to 'Los Chapitos', in municipalities like Concordia [6]. The state also remains a key corridor for cocaine trafficking, as evidenced by a two-ton seizure off the coast of Acapulco linked to a Sinaloa Cartel faction [9].

• Colima: The state continues serving as a critical fentanyl manufacturing hub, with recent seizures revealing sophisticated laboratory operations capable of producing millions of doses, underlining the region's strategic importance for synthetic drug production [4, 8].

• Michoacán: A map found in a former safe house of "El Mencho" revealed CJNG's strategic focus on controlling a corridor through the municipalities of Chinicuila, Coalcomán, Coahuayana, and Aquila to connect with precursor chemical routes from the Pacific. Huitzontla was identified as a key CJNG operational center in the region [10]. CJNG also remains active in the Salvador Escalante area near Pátzcuaro [15].

• Zacatecas: The southern part of the state, particularly the corridor near Cuauhtémoc that borders Aguascalientes, has become a key battleground where CJNG is deploying explosive tactics,  including car bombs and drone-delivered devices, against state forces [14].

• Baja California (Tijuana): Multiple cartels maintain a presence. Four armed men allegedly linked to a Sinaloa Cartel cell under Jesús Rafael Yocupicio, "El Cabezón," were arrested in the Colonia Obrera. The cell is reportedly involved in attacks on rival retail drug dealers [5]. In a separate incident, a CJNG operator known as "La Tía" was arrested for her alleged role in multiple disappearances, highlighting the cartel's involvement in violent crimes beyond trafficking [17].

Targeting Trends

• Law Enforcement Focus: CJNG continues prioritizing attacks against specialized police units, particularly targeting elite forces like FRIZ units in Zacatecas with sophisticated IED and drone attacks, indicating a strategic focus on degrading state security capabilities [2, 14].

• Civilian Infrastructure: Road blockade tactics through vehicle hijacking and burning have increased in Michoacán, with CJNG operatives systematically targeting transportation infrastructure to impede government response and assert territorial control [15].

• High-Value Asset Protection: Sinaloa Cartel factions are implementing enhanced security measures around leadership and fentanyl laboratories in response to potential U.S. military threats, including deployment of lookouts in the Sierra Madre and acquisition of advanced defensive systems [11].

Indicators to Watch

• Further communiqués or narcomantas indicating new DTO alignments or territorial divisions, particularly in response to the "La Mayiza"-Chapo Isidro pact.

• Increased seizures of advanced weaponry, such as anti-drone systems or rocket-propelled grenades, which would confirm the Sinaloa Cartel's reported armament efforts.

• Escalation of CJNG's use of IEDs and weaponized drones in new geographic areas beyond the current conflict zones in Michoacán and Zacatecas.

• Changes in violence patterns or DTO control in the Sinaloan municipalities of Navolato and El Dorado following the announced territorial handover.

• Increased reports of paranoia, internal purges, or changes in communications security within the Sinaloa Cartel, stemming from fears of infiltration by U.S. and Mexican informants.