Mexican security forces killed Nemesio Rubén Oseguera Cervantes, known as “El Mencho,” the leader of the Jalisco New Generation Cartel (CJNG), during a military operation Sunday morning in Tapalpa, Jalisco state, the Mexican Defense Ministry confirmed. Oseguera was initially wounded during the operation and died while being transported by air to Mexico City for medical treatment, along with other captured cartel members.
The death of Oseguera, considered Mexico’s most-wanted drug trafficker, marks the most significant blow to a Mexican cartel since the capture of Joaquín “El Chapo” Guzmán, the former head of the Sinaloa Cartel, who is currently serving a life sentence in the United States. The CJNG, under Oseguera’s leadership, rose to grow one of Mexico’s most powerful criminal organizations, expanding its influence through drug trafficking, extortion, and fuel theft.
Following the operation, Jalisco Governor Enrique Alfaro Ramírez reported roadblocks and disturbances across the state, urging residents to remain indoors. Flights were temporarily suspended at the Guadalajara airport, the state capital, and authorities reported blocked roads in other areas controlled by the cartel, a tactic frequently employed by criminal groups to disrupt enforcement actions.
The takedown is a major achievement for the administration of Mexican President Claudia Sheinbaum, who has faced increasing pressure, particularly from the United States, to address drug trafficking. In the past year, Mexico has extradited numerous suspected cartel members to the U.S. To face prosecution. The U.S. Government had offered a $15 million reward for information leading to Oseguera’s arrest or conviction.
While the extent of U.S. Involvement in the operation remains unclear, Sheinbaum has emphasized a commitment to “cooperation and coordination” with U.S. Officials while rejecting any direct U.S. Operational role within Mexico.
Oseguera’s cartel distinguished itself through a military-style buildup, utilizing armored vehicles, landmines, and drones – a departure from traditional cartel tactics. The CJNG was implicated in the 2015 downing of a Mexican military helicopter, resulting in the deaths of nine law enforcement officials. The helicopter was reportedly struck by .50-caliber machine-gun rounds during a mission to capture Oseguera.
Several of Oseguera’s family members have also faced legal consequences. His son, Rubén Oseguera González, “El Menchito,” was convicted on drug and weapons charges in the U.S. In 2024 and is serving a life sentence at the federal maximum-security prison in Florence, Colorado, often referred to as the “Alcatraz of the Rockies.” His daughter, Jessica Johanna Oseguera González, pleaded guilty to violations of the Kingpin Act related to money laundering and was released from prison in 2022 after serving just over two years.
Rumors of Oseguera’s death or capture have surfaced previously, but authorities have increasingly focused on dismantling the CJNG’s leadership structure in recent years, capturing numerous high-ranking associates and family members.
