CJNG Leadership Transition Confirmed: Juan Carlos Valencia González Takes Over After El Mencho's Death

El País reported on April 16 confirming earlier Wall Street Journal reporting (March 18, 2026) that Juan Carlos Valencia González, known as 'El Gordo' and identified as El Mencho's stepson, has assumed operational leadership of the Jalisco New Generation Cartel (CJNG) following the death of founder Nemesio Oseguera Cervantes ('El Mencho') on February 22, 2026. El Mencho's death — from reportedly advanced kidney disease complications — ended a decade of his feared leadership of what U.S. authorities consider one of the world's most dangerous criminal organizations. Valencia González is believed to have been groomed for succession, managing CJNG's financial and operational networks in Jalisco, Colima, and parts of Michoacán. The Mexican government's response was subdued: Sheinbaum noted ongoing federal security operations in the region without confirming or denying specific intelligence. Security analysts warned that CJNG's leadership transition could trigger internal fractures or territorial disputes — echoing the violent Sinaloa Cartel succession crisis following El Mayo Zambada's 2024 arrest. U.S. law enforcement agencies confirmed awareness of the succession.