A look at ‘El Mayo’ Zambada, the kingpin of Mexico’s Sinaloa drug cartel who is now in US custody The Associated PressWhat we know about the Sinaloa cartel and its leaders CNNHow 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 JournalVideo Leaders of Sinaloa drug cartel arrested ABC News