Rodolfo López Ibarra, known as 'El Nito Amavizca', was arrested in the northern state of Sonora on December 27
One witness testified Millán used an ax to dismember a 6-year-old girl in front of her horror-struck parents during a Zeta purge.
Enrique Ochoa resigned his post as head of the Federal Electricity Commission on Friday.
Edgar Valdez Villareal was a top lieutenant and hit man for Arturo Beltrán Leyva and also led a group of killers responsible for murders carried out by the drug trafficking organization.
Óscar Alejandro Rivero Matos was arrested along with two men, one of them a municipal police officer.
Ciro González Pérez is suspected of being behind the wave of violence in Poza Rica, Veracruz.
Angel Eduardo Prado is considered one of the first 15 priority objectives in the state.
He was arrested after a shootout in Querétaro
Martín Villegas, 38, is accused of smuggling cocaine from Central and South America to the United States.
Alejandro Palacios Benítez 'El Cholo Palacios' is related to the investigations on the disappearance of the 43 student teachers of Ayotzinapa