Antonio Oseguera Cervantes was sentenced on Friday to serve a 270-month prison term for international drug and weapons crimes, according to the Justice Department.
The 67-year-old from Michoacán, Mexico, moved cocaine and methamphetamine into the United States and provided chemicals for meth labs, court documents show. Oseguera Cervantes is the brother of Nemesio Oseguera Cervantes, also known as “Mencho,” who co-founded the Cartel de Jalisco Nueva Generación, the department said.
Oseguera Cervantes admitted to conspiring to send at least five kilograms of cocaine and 500 grams of methamphetamine to the United States. He also pleaded guilty to having and carrying a gun to help with the illegal drug operation. According to the department, he managed the cartel’s drug proceed collection and money laundering, and he carried a pistol when attending meetings to discuss drug trafficking.
He joined the Milenio Cartel around 2002 after serving a federal prison sentence for a heroin distribution conspiracy in the United States, the department said. After being deported to Mexico, he oversaw narcotics sales, maintained methamphetamine laboratories and protected cartel territories. When the Milenio Cartel’s leadership split in 2010, the Cartel de Jalisco Nueva Generación was created.
Oseguera Cervantes reported directly to his brother, who led the cartel from 2010 until a February 2026 Mexican military operation resulted in his death, according to the department.
The case was investigated by the Drug Enforcement Administration and prosecuted as part of the Homeland Security Task Force. Oseguera Cervantes was transferred from Mexico to the United States in February 2025, the department said.