El Mencho: Death of Jalisco Cartel Leader and Escalating Violence in Mexico

Nemesio Rubén Oseguera Cervantes, known as “El Mencho,” the leader of the Jalisco New Generation Cartel (CJNG), was killed during a military operation in western Mexico on February 22, 2026. The death of the notorious drug lord has triggered a wave of violence across several Mexican states, including road blockades, vehicle fires, and reports of attacks on businesses and airports.

Who Was El Mencho?

Born Rubén Oseguera Cervantes on July 17, 1966, in Aguililla, Michoacán, Mexico, he later adopted the name Nemesio and became known as “El Mencho.” He rose through the ranks of the criminal underworld, eventually leading the CJNG, which rapidly grew into a powerful cartel rivaling the Sinaloa Cartel.

El Mencho had a history with the U.S. Legal system, initially entering the country illegally in the 1980s and being deported multiple times after arrests on drug charges. He founded the CJNG after splintering from the Milenio Cartel around 2011.

The Military Operation and Aftermath

The operation that resulted in El Mencho’s death took place in the municipality of Tapalpa in Jalisco. During the operation, six other individuals were killed, two were arrested, and three soldiers were wounded.

Following the news of El Mencho’s death, suspected cartel members responded with widespread violence. Roads were blocked with burning vehicles, including cars, trucks, and buses, in Jalisco, Michoacán, Aguascalientes, Tamaulipas, and Guanajuato. Fires were too set in pharmacies and small retail stores, and there were reports of disruption at the Guadalajara airport.

International Response and Rewards

The U.S. State Department had offered a reward of up to $15 million for information leading to El Mencho’s arrest and/or conviction. U.S. Deputy Secretary of State Christopher Landau described El Mencho as “one of the bloodiest and most ruthless drug kingpins” and called his death a “great development” for Mexico, the U.S., Latin America, and the world.

The U.S. Government had previously classified the CJNG as a foreign terrorist organization due to its extreme violence and involvement in activities beyond drug trafficking, including extortion, migrant smuggling, and arms trafficking.

The CJNG and its Impact

The CJNG, under El Mencho’s leadership, has been blamed for kidnappings, torture, murders, cannibalism, and the spread of fentanyl, which has become a leading cause of drug-related deaths in the United States. The cartel operates with approximately 5,000 members across every continent except Antarctica.

El Mencho’s death represents the most significant blow against Mexican drug cartels since the arrests of Joaquín “El Chapo” Guzmán and Ismael “El Mayo” Zambada.

The U.S. State Department has advised U.S. Citizens to avoid travel to the Mexican states of Jalisco, Tamaulipas, Michoacán, Guerrero, and Nuevo León due to ongoing security measures and criminal activity.