The Justice Department announced Thursday that Ismael “El Mayo” Zambada, a leader of Mexico’s Sinaloa cartel, and Joaquín Guzmán López, the son of fellow cartel leader Joaquín “El Chapo” Guzmán, have been arrested by U.S. authorities in El Paso, Texas. Both men are facing multiple charges in the U.S. for leading the cartel’s criminal operations, including its deadly fentanyl manufacturing and trafficking networks. U.S. officials had offered a reward of up to $15 million for information leading to Zambada's capture.