On 22 February 2026, Mexico experienced one of the most dramatic and consequential moments in its modern history: federal forces carried out a high-stakes military operation that resulted in the death of Nemesio “El Mencho” Oseguera Cervantes, the leader of the Jalisco New Generation Cartel (CJNG) — arguably the most powerful criminal organisation in the country.
This event has since sent shockwaves across the nation: violent retaliation, national security alerts, economic disruptions, policy debates, and concerns about Mexico’s image just months before it co-hosts the 2026 FIFA World Cup with the United States and Canada.
Who Was El Mencho — And Why Did His Death Matter?
Nemesio Oseguera Cervantes, better known as “El Mencho”, had been at the top of Mexico’s most-wanted list for years. He built the CJNG into one of the country’s most ruthless and expansive criminal networks, involved not only in narcotics trafficking (including fentanyl, methamphetamine, cocaine and precursor chemicals) but also extortion, kidnapping, and violent clashes with rival groups and state forces.
El Mencho evaded capture for decades, operating predominantly from his stronghold in the western state of Jalisco. His cartel was known for bold attacks — including shootouts and ambushes — and for establishing a network that spanned towns, cities and transit routes deep into Mexico’s heartland.
22 February 2026: In a coordinated operation involving Mexican Army and intelligence support — including information shared by the United States — federal forces surrounded El Mencho’s location in the mountainous town of Tapalpa, Jalisco. During the attempted capture, he was fatally wounded and later died while being transported to Mexico City.
📉 Immediate Fallout — Violence Erupts Nationwide
Almost as soon as news of El Mencho’s death spread, violent reprisal broke out across large parts of Mexico:
🧨 Massive Retaliation and Blockades
- Suspected CJNG gunmen launched coordinated attacks, involving narco-blockades — burning vehicles, road blockades, and petrol station attacks — that paralyzed highways and disrupted travel across the country.
- Violence was reported in 20+ states, with clashes between cartel operatives and security forces.
💥 Casualties and Losses
- Early reports indicated dozens of deaths, including members of the National Guard and cartel gunmen. Specific figures vary by source, but government and media reports acknowledged heavy losses on both sides.
- Local authorities reported burning infrastructure, road disruptions, and a general atmosphere of fear in urban and rural areas alike.
🚫 Disrupted Transport and Tourism
- Some domestic and international flights were suspended or delayed, especially to and from key cities like Guadalajara and the resort city Puerto Vallarta, as airlines responded to heightened security risks.
- The violent backlash also forced temporary suspension of classes, transport services and normal business operations in several regions.
🧑✈️ Government Response
Mexico’s Secretary of Security, Omar García Harfuch, and President Claudia Sheinbaum publicly stated that authorities were working to clear all blockades and restore order.
By late February, some travel advisories — including from the U.S. Embassy — shifted back toward normal caution, even as specific risk zones remained highlighted for travellers due to ongoing cartel violence.