Ernesto Fonseca Carrillo, commonly referred to by his alias Don Neto, is a Mexican drug lord and former leader of the Guadalajara Cartel, a defunct criminal group based in Jalisco. From Wikipedia
The 94-year-old, convicted for the 1985 murder of DEA agent Enrique 'Kiki' Camarena, was freed after serving his full sentence, raising questions about potential U.S. extradition efforts.