Cartel Violence Erupts Across Mexico After Death of CJNG Leader

Roadblocks, gunfire, and burning vehicle attacks force airports to halt operations and highways to shut down.

Published on Feb. 23, 2026

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Cartel violence erupted across more than 10 of Mexico's 32 states on Sunday after the government confirmed the death of Cartel Jalisco New Generation (CJNG) leader Nemesio 'El Mencho' Oseguera. The unrest forced airports to halt operations, highways to shut down, and U.S. officials to warn American citizens to shelter-in-place as CJNG gunmen launched coordinated retaliatory strikes nationwide.

Why it matters

The CJNG is one of Mexico's most powerful and violent cartels, designated as a foreign terrorist organization by the U.S. government. The widespread violence and disruption following El Mencho's death highlights the fragility of security in parts of Mexico and the potential for further instability and conflict between rival cartels.

The details

Shortly after rumors of El Mencho's death circulated, CJNG gunmen began constructing road blockades using semi-tractor trailers and civilian vehicles, some lit on fire, to impede traffic along major roadways in four key states controlled by the cartel. The violence soon spread to at least 10 additional states, with reports of gunfire, burning buildings, and disruptions to air travel.

  • On Sunday, February 23, 2026, the Mexican government confirmed the death of CJNG leader Nemesio 'El Mencho' Oseguera.
  • The cartel violence erupted shortly after the confirmation of El Mencho's death on Sunday morning.

The players

Nemesio 'El Mencho' Oseguera

The former leader of the Cartel Jalisco New Generation (CJNG), one of Mexico's most powerful and violent drug cartels.

Cartel Jalisco New Generation (CJNG)

A Mexican drug cartel designated as a foreign terrorist organization by the U.S. government, known for its extreme violence and control over large swaths of the country.

Mexican Army

The armed forces of Mexico, which conducted the enforcement operation that led to the death of CJNG leader El Mencho.

U.S. Embassy in Mexico

The diplomatic mission of the United States in Mexico, which issued a shelter-in-place warning to American citizens due to the widespread cartel violence.

Randy Clark

A 32-year veteran of the United States Border Patrol who served as the Division Chief for Law Enforcement Operations, and is now reporting on the cartel violence in Mexico.

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What they’re saying

“The violence erupted shortly after rumors of El Mencho's death began to circulate early Sunday morning when cartel gunmen associated with the CJNG began constructing road blockades using semi-tractor trailers and civilian vehicles, some lit on fire, to impede traffic along major roadways in four key states controlled by the cartel.”

— Randy Clark, 32-year veteran of the United States Border Patrol (Breitbart)

What’s next

The U.S. Embassy in Mexico has warned American citizens to shelter-in-place and avoid areas with law enforcement activity as the cartel violence continues to spread across the country. The Mexican government is likely to intensify efforts to combat the CJNG and other cartels in the wake of El Mencho's death, which could lead to further clashes and unrest.

The takeaway

The widespread cartel violence following the death of CJNG leader El Mencho underscores the fragility of security in parts of Mexico and the potential for further instability and conflict between rival cartels. This incident highlights the ongoing challenges the Mexican government faces in combating the power and influence of these criminal organizations.