The era of Nemesio Rubén Oseguera Cervantes, infamously known as ‘El Mencho,’ concluded violently on February 22nd when Mexican military forces fatally wounded the drug lord during an operation in Jalisco state. The leader of the Jalisco New Generation Cartel (CJNG) succumbed to gunshot injuries while being transported by air to Mexico City, marking the most significant blow to Mexican organized crime since the recapture of Joaquin ‘El Chapo’ Guzman.
El Mencho’s journey from rural poverty to cartel leadership began in the village of Naranjo de Chila, Michoacán, where he was born into a farming family in 1966. His criminal trajectory started after immigration to California, where heroin distribution convictions led to nearly three years in U.S. federal prison followed by deportation at age 30.
His brief tenure as a local police officer in Mexico proved strategically valuable, providing insights into law enforcement tactics that would later facilitate his evasion of capture for over a decade. Through marriage into the influential Gonzalez Valencia family and ruthless ambition, Oseguera rose within the Milenio Cartel before co-founding CJNG around 2009-2010.
Under his leadership, CJNG transformed from a breakaway faction into a global criminal enterprise operating in dozens of countries. The cartel established control over key Pacific ports, enabling massive importation of precursor chemicals from China for synthetic drug production. The U.S. Drug Enforcement Administration identified CJNG as a primary supplier of cocaine, methamphetamine, heroin and fentanyl to American markets.
The organization’s expansion was characterized by extreme violence, including the 2015 downing of a Mexican military helicopter, the killing of 15 police officers, and a 2020 attack on Mexico City’s police chief. Despite this brutality, Oseguera maintained an unusually low public profile, with few recent photographs circulating and reports of his movement between remote locations to avoid detection.
The aftermath of his death triggered immediate violence, with CJNG gunmen torching vehicles, blocking highways, and clashing with security forces across multiple states. Authorities reported at least 25 National Guard members killed in the retaliatory violence.
With key family members including his son ‘El Menchito’ serving life sentences in the U.S. and no clear successor, analysts warn of potential cartel fragmentation, intensified turf wars, and escalating violence in contested regions as rival factions compete for control of Mexico’s criminal underworld.