Who was El Mencho, Mexico's most wanted man?

BBC World

February 23, 2026

AI-Generated Deep Dive Summary

The death of Nemesio Oseguera Cervantes, known as "El Mencho," the leader of Mexico's powerful Jalisco New Generation Cartel (CJNG), has been celebrated as a significant victory for Mexican and U.S. authorities. El Mencho, whose rise to power was marked by ruthless tactics and ambition, was killed in a clash with security forces supported by U.S. intelligence. His death has sparked violent reprisals across multiple states, including roadblocks, burning cars, and clashes in cities like Guadalajara and Puerto Vallarta. This reaction underscores the loyalty of his cartel members and their determination to avenge his killing. El Mencho's influence was vast, as he transformed the CJNG into one of Mexico's most dominant criminal groups through territorial expansion and diversification into new illicit activities, including the lucrative fentanyl trade. His rise began in the 1980s when he moved to the U.S. as an undocumented immigrant, where he engaged in drug trafficking before being deported back to Mexico at age 30. He quickly rose through the ranks of the Milenio Cartel and later emerged as a key figure after the fragmentation of the Sinaloa Cartel, following the extradition of its leader, Joaquín "El Chapo" Guzmán. The impact of El Mencho's death extends beyond Mexico; it highlights the ongoing collaboration between U.S. and Mexican authorities in combating organized crime. While his removal may weaken the CJNG temporarily, analysts note that the cartel likely has capable lieutenants ready to take over. The broader question is whether this event will lead to a de-escalation of violence or further instability as competing factions jockey for control. For now, the situation remains fluid, with law enforcement response playing a critical role in determining the outcome. The death of El Mencho also serves as a reminder of the complex and interconnected nature of transnational drug cartels. His rise to power was emblematic of the shifting dynamics within Mexico's criminal landscape, where the collapse of major cartels like Sinaloa created opportunities for new groups to emerge. The CJNG's ascension under El Mencho’s leadership positioned it

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Originally published on BBC World on 2/23/2026