Mexican authorities have killed Nemesio Rubén Oseguera Cervantes, known as “El Mencho,” leader of the feared Jalisco New Generation Cartel, in an operation that sparked widespread retaliatory violence across western Mexico.
The 59-year-old cartel boss, one of the world’s most wanted drug traffickers, was tracked down through a romantic partner who led authorities to his safe house near the picturesque mountain town of Tapalpa, approximately 80 miles southwest of Guadalajara, Mexico’s defence secretary revealed on Monday.
In a press conference detailing Sunday’s operation—supported by US intelligence—officials said El Mencho was fatally wounded as military forces attempted to capture him. The US had offered a $15 million (£11 million) reward for his capture and has been pressing Mexico to take more aggressive action against drug trafficking groups.
The operation
Defence Secretary Ricardo Trevilla Trejo explained that El Mencho’s bodyguards opened fire on military personnel as they encircled a cabin in a wooded area outside Tapalpa. The gunfire forced a helicopter into an emergency landing, echoing a failed 2015 capture attempt when cartel gunmen brought down a helicopter with a rocket-propelled grenade.
Fighting continued as El Mencho fled into nearby forest, where he was wounded and captured. He died while being transferred for medical treatment in Mexico City. Seven of his men were also killed in the firefight, while two soldiers were wounded. Authorities seized rifles and grenade launchers from the scene.
Wave of violence
The operation immediately triggered widespread chaos across Mexico, with cartel gunmen blocking nearly 100 major roads, torching vehicles, and attacking security forces—particularly in Jalisco and Michoacán states.
Security Minister Omar García Harfuch reported that 25 national guard members were killed and 14 wounded in the clashes, along with 34 gunmen and one bystander. Another 70 people were arrested nationwide.
Trevilla confirmed that Hugo César Macías Ureña, alias “El Tuli,” a close ally of El Mencho who coordinated the violence and reportedly offered bounties for dead soldiers, was also killed in a confrontation.
Fear and panic
In Guadalajara, Mexico’s second-largest city and a 2026 World Cup host, residents hid in fear as violence erupted. Tanya Dittmar, a trainee doctor, sheltered in a closet when an hour-long gun battle broke out near her home as cartel gunmen attacked a National Guard base.
“I had never heard a bullet before,” Dittmar said. “Then the sounds began to change—as if they were getting closer. That’s when I got really frightened.”
Stephen Woodman, a security analyst in Guadalajara, described the scene as “eerily quiet” once the initial action subsided, with everything shut down and no traffic, but “a very strong smell of smoke in the air.”
In Puerto Vallarta, a popular resort city on the Pacific coast, more than 200 vehicles were set alight by young men on motorbikes, dressed in black with covered faces. Huge clouds of smoke rose above beaches as tourists watched. Local journalist Susana Carreño documented the destruction, noting that nothing like this had happened before in the city.
“Maybe some [tourists] left with the idea that this was a rare, isolated event,” Carreño said. “But when you see these kinds of things, I don’t think you fancy coming back, to be honest.”
International response
The UK Foreign Office issued a travel advisory urging visitors to stay indoors, while the US embassy in Mexico City warned citizens to “shelter in place” in affected regions. Several international airlines cancelled flights to Guadalajara and Puerto Vallarta.
US Deputy Secretary of State Christopher Landau called El Mencho “one of the bloodiest and most ruthless drug kingpins,” adding: “This is a great development for Mexico, the US, Latin America, and the world.”
Concerns over power vacuum
While the killing may relieve pressure from the Trump administration—which has designated the Jalisco cartel as a “foreign terrorist organisation”—experts warn it could create a dangerous power vacuum.
Chris Dalby, an organised crime expert who has written about the cartel, said the biggest question now is who will fill the void. “If no one can, if the CJNG finally splinters, you have four or five different lieutenants with the manpower, the weaponry and the criminal empires to build their own fiefdoms—and that could plunge Mexico into almost record levels of violence.”
Some sources have identified El Mencho’s stepson, Juan Carlos, as a possible successor. “If [he] can unite the CJNG we may avoid that kind of civil war,” Dalby said, though he added this was far from guaranteed.
Mexican President Claudia Sheinbaum sought to reassure citizens, stating: “Mexico is at peace, calm, and we are working in all the states.” By Monday, authorities reported having cleared all blockades, though sporadic reports of burning vehicles continued in Michoacán and many schools remained closed as a precaution.
