El Mencho Killed: Mexico’s Drug War Escalates

One of Mexico’s most notorious drug lords, Nemesio Oseguera Cervantes, known as “El Mencho,” was killed in a military raid on Sunday, February 23, 2026, sparking widespread retaliatory violence across the country. The death of the leader of the Jalisco New Generation Cartel (CJNG) represents a significant blow to Mexico’s criminal landscape, but similarly raises concerns about potential instability.

US Intelligence Support and Mexican Operation

Mexican President Claudia Sheinbaum has faced increasing pressure from the United States to intensify efforts against drug cartels responsible for the production and trafficking of drugs, particularly fentanyl, into the US. The operation to capture El Mencho was carried out by Mexican special forces in the town of Tapalpa, Jalisco state, according to Mexico’s defense ministry. His body was transported to Mexico City in a heavily guarded convoy of National Guard troops.

White House press secretary Karoline Leavitt stated that the United States provided intelligence support for the operation. The Trump administration “commends and thanks the Mexican military for their cooperation and successful execution of this operation.”

Widespread Retaliatory Violence

Following reports of El Mencho’s death, cartel members blockaded highways with burning vehicles and torched businesses in over 20 Mexican states, paralyzing parts of the country. Jalisco’s capital, Guadalajara, became largely deserted as residents sheltered in place. Schools were closed as a precaution in several states.

Authorities in Jalisco, Michoacan, and Guanajuato reported at least 14 deaths, including seven National Guard troops.

From Police Officer to Cartel Kingpin

Nemesio Oseguera, a former police officer, founded and led the CJNG, which originated in the state of Jalisco. The cartel rapidly expanded its power and influence, becoming known for its violent tactics, including forced labor and recruitment. Under El Mencho’s leadership, the CJNG diversified its criminal activities beyond drug trafficking to include fuel theft, extortion, human smuggling, and financial fraud.

The CJNG also pioneered the use of drones in attacks, particularly in remote regions of western Mexico, as part of its territorial expansion.

Impact and Future Outlook

The raid represents one of Mexico’s most significant successes against drug cartels responsible for smuggling drugs, including fentanyl, into the United States. Security experts are closely monitoring the situation to determine whether El Mencho’s death will fracture the CJNG leadership and lead to internal conflict. Carlos Olivo, a former US Drug Enforcement Administration assistant special agent in charge and an expert in CJNG, predicts “skirmishes between the various factions, and these spasms of violence could last for years.”

Travel Warnings Issued

The US State Department has urged American citizens in parts of Mexico to shelter in place due to ongoing security operations, road blockages, and criminal activity. Roadblocks have disrupted airline operations, leading to flight cancellations in Guadalajara and Puerto Vallarta. Canada has also issued travel advisories, urging citizens in Michoacan, Guerrero, and Jalisco to shelter in place. Several US and Canadian airlines, including United, American, Southwest, Air Canada, and WestJet/Sunwing, have cancelled flights to affected areas.

US Deputy Secretary of State Christopher Landau described El Mencho’s killing as a “great development” for the US, Mexico, and Latin America.