Antonio Oseguera Cervantes, the brother of former Jalisco New Generation Cartel (CJNG) leader Nemesio Oseguera Cervantes, has been sentenced to 22 years and 6 months in federal prison for his role in an international drug trafficking operation.
The 67-year-old Mexican national, known as “Tony Montana,” received a 270-month sentence after pleading guilty to conspiring to distribute cocaine and methamphetamine for importation into the United States and possessing a firearm in connection with the drug operation.
According to the U.S. Department of Justice (DOJ), Oseguera Cervantes spent more than 2 decades working with Mexican drug trafficking organizations, initially joining the Milenio Cartel around 2002. He oversaw drug sales, protected cartel territory from rival groups and managed methamphetamine laboratories.
Following the breakup of the Milenio Cartel in 2010, he became involved with the newly formed CJNG, which was co-founded by his brother, Nemesio, better known as “El Mencho.”
Oseguera Cervantes reported directly to his brother and worked alongside the CJNG-aligned Los Cuinis cartel. His responsibilities included managing the collection of drug proceeds and laundering money generated by the organization’s trafficking operations.
He also carried a pistol while collecting cartel proceeds and attending meetings related to drug trafficking, according to court documents.
El Mencho led the CJNG from its formation in 2010 until he was killed during a Mexican military operation in February 2026.
Oseguera Cervantes was transferred from Mexico to the United States in February 2025 under Mexico’s national security law to face federal charges. His case was handled by the Drug Enforcement Administration (DEA), with assistance from other U.S. agencies and the Mexican government.
The DOJ said the case was part of the Homeland Security Task Force initiative, a federal effort targeting drug cartels and other transnational criminal organizations.
Assistant Attorney General A. Tysen Duva said Oseguera Cervantes helped supply dangerous drugs to U.S. communities for years, while DEA Administrator Terry Cole described him as a key figure in the development of the CJNG.
Oseguera Cervantes will serve his 270-month sentence in federal prison.