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
Fonseca, convicted for the 1985 murder of DEA agent Enrique 'Kiki' Camarena, was freed from confinement, leaving uncertainty over potential U.S. extradition.