‘El Mencho,’ Mexico’s Notorious Cartel Boss, Killed by Security Forces

Rolling Stone

by Althea Legaspi

February 22, 2026

AI-Generated Deep Dive Summary

Mexican security forces have reportedly killed Nemesio Oseguera Cervantes, also known as "El Mencho," a notorious drug cartel leader and head of the Cartel Jalisco Nueva Generación (CJNG). The operation occurred in Tapalpa, Jalisco, where El Mencho was based. According to Mexico’s Ministry of Defense, he was wounded during the raid and died while being transported to Mexico City. At least seven other cartel members were also killed in the operation, as reported by *The New York Times*. U.S. Deputy Secretary of State Christopher Landau confirmed the death, calling El Mencho one of the "bloodiest and most ruthless" drug traffickers. El Mencho, a former Jalisco state policeman turned cartel leader, headed CJNG, which became known for its rapid growth and extreme violence. The group was designated as a foreign terrorist organization by the U.S. in February 2019 due to its involvement in drug trafficking, extortion, migrant smuggling, and fentanyl trade. His death could strengthen Mexico’s relationship with the U.S., particularly under President Donald Trump, who had threatened military strikes against cartels if Mexico failed to crack down on them. Following El Mencho’s death, violence erupted across western Mexico, with reports of vehicles being burned in at least six states—a tactic often used by cartels to disrupt military operations. Public transportation was suspended in Jalisco, and authorities advised residents to remain indoors. The U.S. government issued a "shelter in place" advisory for citizens in affected areas, including Jalisco, Tamaulipas, Michoacán, Guerrero, and Nuevo León. El Mencho’s reign as CJNG leader was marked by a dramatic increase in Mexico’s homicide rate. He was also indicted multiple times in the U.S. on charges of drug trafficking, corruption, and murder, with a $15 million bounty offered for his capture or conviction. His elusive nature made him one of America’s most-wanted cartel bosses. The death of El Mencho is significant not only for its impact on Mexico’s security but

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Originally published on Rolling Stone on 2/22/2026