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

The leader of the Jalisco Novel Generation Cartel (CJNG), Nemesio Rubén Oseguera Cervantes, known as “El Mencho,” was killed during an operation by the Mexican military in western Mexico on February 22, 2026. His death has triggered a wave of violence across at least 20 of Mexico’s 32 states, including widespread arson, looting and road blockades.

The Operation and El Mencho’s Death

Mexican special forces, supported by Air Force aircraft, located El Mencho in the municipality of Tapalpa, Jalisco, approximately 62 miles southwest of Guadalajara. During the operation, El Mencho was seriously injured and died while being transported to Mexico City according to a statement from the Secretariat of National Defense. Six other cartel members were killed, and two were arrested. Three Army personnel were also injured.

Authorities followed one of El Mencho’s romantic partners to his hideout as reported by Defence Secretary Ricardo Trevilla.

US Involvement and Significance

The operation was conducted in coordination with United States authorities, who provided “complementary information.” The White House press secretary, Karoline Leavitt, stated that El Mencho was a priority target for both governments due to his role in trafficking fentanyl into the United States as reported by the Associated Press. Washington had previously designated the CJNG as a terrorist organization and offered a $15 million reward for information leading to Oseguera Cervantes’s capture.

Widespread Violence and Disruption

Following the announcement of El Mencho’s death, a wave of violence erupted across Mexico. Reports indicate dozens of fires were set at businesses, vehicles, and gas stations, along with over 250 road blockades. At least 14 deaths were reported, including seven members of the National Guard, and 64 people were detained according to the AP.

The states most affected included Jalisco, Michoacán, and Guanajuato, but disruptions were reported in a total of 20 states. In Jalisco, Governor Pablo Lemus suspended public transportation and urged residents to stay home. Several airlines, including Air Canada, suspended flights to Puerto Vallarta due to security concerns.

El Mencho’s Rise and the CJNG

Nemesio Oseguera Cervantes, born in 1966, began his criminal career in the 1990s, with a prior arrest in the United States for heroin conspiracy, serving three years in prison as detailed by CNN. After his return to Mexico, he briefly served as a police officer before rising to prominence within the CJNG. The cartel initially operated as an ally of the Sinaloa Cartel but became independent in 2012.

The CJNG has since become one of the most powerful and aggressive cartels in Mexico, known for its brazen attacks on Mexican officials, use of explosives and drones, and widespread operations across the country according to CBC News. The DEA recognizes the CJNG’s presence in 21 of Mexico’s 32 states.

Government Response and Future Outlook

President Sheinbaum has historically criticized strategies of direct confrontation with cartels, but has faced increasing pressure from the Trump administration to demonstrate results in the fight against drug trafficking. The government has reinforced security measures and is working to restore order in the affected states.

The death of El Mencho is expected to send “psychological shockwaves” through Mexico’s drug cartels according to a former high-place U.S. Official, but the immediate aftermath has been marked by significant violence and disruption. The long-term impact on the CJNG and the broader landscape of organized crime in Mexico remains to be seen.