MEXICO CITY (Realist English). The Mexican army has killed Nemesio Oseguera Cervantes, leader of the powerful Jalisco New Generation Cartel (CJNG), during an operation to capture him in Jalisco state, marking one of the most significant blows to organized crime in the country in a decade.
Oseguera Cervantes, widely known as “El Mencho,” was killed Sunday after cartel gunmen clashed with federal forces attempting to detain him. The operation involved the Mexican Air Force and special forces units, according to the Defense Ministry. Four alleged cartel members were killed in the confrontation, and three others were wounded, including Oseguera Cervantes, who later died while being transferred by air to Mexico City. Three soldiers were injured and two suspects detained. Authorities said rocket launchers capable of downing aircraft were seized at the scene.
His death prompted an immediate and coordinated wave of violence across Mexico. Cartel members set vehicles ablaze and blocked roads in at least 20 states. In Guadalajara, the capital of Jalisco and Mexico’s second-largest city, residents sheltered indoors as schools in several states suspended classes and security forces were placed on nationwide alert. Guatemala reinforced security along its border with Mexico.
The killing represents the highest-profile cartel strike since the recapture of Joaquín “El Chapo” Guzmán nearly ten years ago. Oseguera Cervantes, 59, founded the Jalisco New Generation Cartel around 2009 after rising through Mexico’s criminal underworld. The organization rapidly expanded into one of the country’s most powerful trafficking networks, moving cocaine, methamphetamines and fentanyl into the United States while diversifying into fuel theft, extortion and other illicit enterprises.
CJNG gained notoriety for its aggressive tactics, including downing a military helicopter in 2015 and orchestrating a high-profile assassination attempt against then–Mexico City police chief Omar García Harfuch. The group also experimented with drone attacks and improvised explosive devices.
Oseguera Cervantes faced multiple indictments in the United States, and the U.S. State Department had offered a $15 million reward for information leading to his arrest. Both Mexican and U.S. officials said intelligence cooperation contributed to Sunday’s operation. The move may strengthen Mexico’s position in dealings with Washington, where the Trump administration has pressed for tougher action against drug cartels and previously designated several groups, including CJNG, as foreign terrorist organizations.
Despite the tactical success, the longer-term impact remains uncertain. CJNG operates in at least 21 of Mexico’s 32 states and maintains a strong presence in the United States and beyond. Analysts warn that the death of its leader could trigger internal power struggles or intensified conflict with rival groups, including factions of the Sinaloa cartel.
Security experts say the coming months will determine whether authorities can capitalize on the disruption to weaken the organization or whether a power vacuum will unleash further violence. The risk, some caution, is that the cartel could resort to indiscriminate attacks in a bid to reassert dominance, potentially escalating instability across the region.