Mexican Military Kills “El Mencho,” Triggering Violent Cartel Retaliation Across Mexico

By Emmanuel Bobby

The Mexican army has killed Nemesio Rubén Oseguera Cervantes, better known as “El Mencho,” the country’s most-wanted drug lord and leader of the powerful Jalisco New Generation Cartel (CJNG). His death on Sunday has plunged large parts of Mexico into chaos, as cartel members launched violent retaliatory actions that paralyzed cities and disrupted travel across multiple states.

Oseguera Cervantes was wounded during an operation to capture him in Tapalpa, Jalisco, roughly two hours southwest of Guadalajara. He later died while being transported by air to Mexico City, according to a statement from Mexico’s Defense Department. During the operation, Mexican troops came under fire, killing four people at the scene. Three others, including Oseguera Cervantes, were wounded and later died, while two suspects were arrested. Authorities also seized armored vehicles, rocket launchers, and other weapons. Three members of the armed forces were injured and are receiving medical treatment.

The killing of the cartel leader immediately sparked widespread violence. Cartel members burned vehicles to block highways and major roads in nearly a dozen states, sending thick smoke into the sky and bringing daily life to a halt. Guadalajara, Jalisco’s capital and Mexico’s second-largest city, became a virtual ghost town as residents stayed indoors. Schools were canceled in several states, public transportation was suspended in parts of Jalisco, and authorities urged residents to shelter in place.

Puerto Vallarta, a major tourist destination, also experienced turmoil. Videos on social media showed panic at the airport and smoke rising across the city. Airlines were forced to adjust operations, with Air Canada suspending flights to Puerto Vallarta due to security concerns and American Airlines waiving change fees for affected travelers. Roadblocks prevented many passengers from reaching airports, and foreign embassies issued warnings for citizens to remain indoors and avoid travel.

U.S. officials confirmed that Washington provided intelligence support to Mexico during the operation, although the mission itself was carried out by Mexican special forces. The White House praised the Mexican military for the successful operation, calling it a major step in the fight against drug cartels and fentanyl trafficking. The U.S. State Department had previously offered a reward of up to $15 million for information leading to Oseguera Cervantes’ arrest.

The killing of “El Mencho” has drawn mixed reactions from families affected by the fentanyl crisis in the United States. Some parents who lost children to opioid overdoses welcomed the news, saying his death could disrupt drug flows and weaken cartel operations. Others expressed concern that the violence would worsen and that another leader would quickly rise to replace him.

Mexican President Claudia Sheinbaum praised the country’s security forces and called for calm, while analysts warned that the removal of a cartel kingpin often leads to internal power struggles and escalating violence. Sheinbaum has previously criticized the “kingpin strategy,” arguing that taking down cartel leaders can fragment criminal organizations and spark bloody turf wars.

The CJNG has been one of Mexico’s most aggressive and technologically advanced cartels, known for attacking military forces, using explosives dropped from drones, and planting mines. It has a presence across Mexico and the United States and is considered one of the main suppliers of cocaine, methamphetamine, and fentanyl to the U.S. market. The cartel was designated a foreign terrorist organization by the U.S. government in 2025.

Oseguera Cervantes, 59, began his criminal career in the 1990s and previously served time in U.S. prison for heroin trafficking. After returning to Mexico, he co-founded the CJNG, which later split from the Sinaloa cartel and became one of the country’s most powerful criminal organizations. He had been indicted multiple times in U.S. federal court on charges related to drug trafficking, firearms offenses, and running a continuing criminal enterprise.

With his death, Mexico now faces uncertainty over the future of the CJNG and the potential for increased violence as rival factions compete for control. Authorities fear that the fallout could destabilize regions already plagued by cartel activity, even as both Mexico and the United States hail the operation as a major victory in the fight against organized crime and drug trafficking.