Ismael ‘El Mayo’ Zambada: How US caught drug kingpin after 35 years BBC.comUS operation to capture Sinaloa cartel leaders had the help of one of the captured men: a son of ‘El Chapo,’ official says CNNHow El Chapo’s son helped U.S. arrest fabled narco chief “El Mayo” ReutersHow the U.S. Captured One of Mexico’s Biggest Drug Lords The New York TimesExclusive | How the Son of ‘El Chapo’ Duped Drug-Cartel Kingpin ‘El Mayo’ Zambada and Turned Himself In The Wall Street Journal