Mexico’s most wanted drug lord, Nemesio Rubén Oseguera Cervantes — widely known as “El Mencho” — was killed in a military raid that triggered coordinated cartel retaliation across several states, paralysing transport networks and prompting security advisories from the United States and Canada.
The 59-year-old leader of the Jalisco New Generation Cartel (CJNG) was wounded during a clash with soldiers in Tapalpa, Jalisco, and died while being airlifted to Mexico City, according to the Mexican army.
His death marks one of the most significant blows to organised crime in Mexico since the arrests of Joaquín Guzmán, known as “El Chapo,” and Ismael Zambada García of the Sinaloa cartel. Within hours of the announcement, cartel gunmen torched vehicles, blocked highways and clashed with security forces in what authorities described as widespread retaliatory violence spanning at least five states.
What happened in Tapalpa
Mexico’s Secretariat of National Defence said federal forces carried out the operation in Tapalpa, western Jalisco. Oseguera was shot during a firefight and later died during an air transfer to the capital.
Officials said six suspected cartel members were killed in the operation, while three soldiers were injured and hospitalised. Two suspects were arrested, and authorities seized a cache of weapons, including rocket launchers capable of targeting aircraft and armoured vehicles.
A federal official, speaking anonymously to the Associated Press, confirmed the killing during the military action in Jalisco.
The United States had offered a reward of up to $15 million for information leading to Oseguera’s arrest. Earlier this year, the Trump administration designated CJNG as a foreign terrorist organisation.
US and Canada issue travel advisories
Following the outbreak of violence, the US State Department urged American citizens in affected areas to shelter in place. The advisory covered parts of Jalisco — including Puerto Vallarta, Chapala and Guadalajara — as well as areas in Tamaulipas, Michoacán, Guerrero and Nuevo León.
The notice advised avoiding areas near law enforcement activity, limiting travel, monitoring local media and following official instructions.
Canada’s Ministry of Foreign Affairs said it was closely monitoring the “serious and rapidly evolving security situation” in Jalisco, particularly in Guadalajara and Puerto Vallarta, and urged citizens to comply with shelter-in-place orders.
Wave of retaliatory violence
Soon after news of the raid spread, gunmen set fire to more than 20 vehicles and blocked major roads across western Jalisco. The unrest quickly expanded to Guadalajara and Puerto Vallarta, before spreading to neighbouring states such as Michoacán and Guanajuato.
In Guanajuato, authorities reported arson attacks on pharmacies and convenience stores, though no injuries were immediately confirmed. A joint security operation involving the army, National Guard and municipal police was deployed.
Residents described scenes of panic as armed men forced people to evacuate businesses before setting them ablaze. Jalisco Governor Pablo Lemus Navarro urged residents to remain indoors and announced the suspension of public transport services until order was restored. He warned that the violence had affected at least five states and advised against highway travel.
In Guadalajara, streets were largely deserted as shops, pharmacies and petrol stations closed.
Public events disrupted
The deteriorating security situation led to the cancellation of public events and sporting fixtures. Jalisco, scheduled to host four matches during the 2026 World Cup, suspended large gatherings and in-person classes.
Several football matches were postponed, including Liga MX Clausura fixtures, women’s league games and an international friendly between Mexico and Iceland.
Air travel was also disrupted, with US and Canadian airlines cancelling numerous flights. Air Canada suspended services to Puerto Vallarta amid safety concerns.
International reaction and political pressure
US Deputy Secretary of State Christopher Landau welcomed the development, describing Oseguera as one of the most ruthless drug kingpins and calling the operation a major step forward for regional security.
The raid comes amid renewed pressure from US President Donald Trump on Mexico to curb the flow of drugs, particularly fentanyl, into the United States. Washington has accused CJNG of playing a major role in trafficking cocaine, heroin, methamphetamine and fentanyl northward.
In 2022, the US Justice Department charged Oseguera with leading a large-scale fentanyl manufacturing and distribution network operating across several Mexican states, including Jalisco, Colima and Veracruz.
The rise of CJNG
Formed in 2009, CJNG rapidly evolved into one of Mexico’s most powerful and violent criminal organisations. Under Oseguera, a former police officer, the cartel expanded its territorial reach and frequently engaged in high-profile confrontations with security forces.
While the killing of El Mencho represents a milestone in Mexico’s fight against organised crime, the swift and coordinated backlash highlights the enduring strength of cartel networks. Security forces remain deployed across affected regions as authorities work to restore stability.
