Two leaders of Mexico’s Sinaloa Cartel, including the son of notorious former drug lord Joaquin “El Chapo” Guzman, were arrested on US soil Thursday, authorities said. Ismael “El Mayo ...

Ismael “El Mayo” Zambada was a kingpin in Mexico’s Sinaloa cartel, the world’s top producer of fentanyl. He was arrested alongside the son of “El Chapo.” ...

Sinaloa drug cartel leader Ismael "El Mayo" Zambada — in a letter written from prison and released by his lawyer — details what he says led to his arrest in the United States.