Bloody internecine fighting in Guerrero state fuels fears that Mexico's anti-narco "community police" groups could themselves be co-opted by the warring cartels.
Felipe Flores, former police chief of Iguala, the Mexican city where 43 college students disappeared in 2014, was finally apprehended after two years as a fugitive.
Tomás Zerón de Lucio, head of Mexico's Criminal Investigations Agency, turned in his resignation amid an internal inquiry into his handling of the Ayotzinapa massacre case.
Mexican ecological defender Ildefonso Zamora is now in his seventh month behind bars, despite calls for his relase from Amnesty International and Greenpeace.
A panel of experts released its final report on the 43 missing students from Ayotzinapa, Guerrero, charging that the Mexican government has hampered the investigation.
The UN Working Group on Arbitrary Detention issued a ruling that Mexico's imprisonment of Guerrero "community police" leader Nestora Salgado is illegal.
The Zapatista rebels in Mexico's southern state of Chiapas marked the anniversary of their 1994 New Years Day uprising by hosting a national activist gathering in their territory.
A group called the "Pagan Sect of the Mountain" claimed responsibility for improvised bomb attacks on Mexico City buses, in a communique filled with anti-civilization rhetoric.
Mexico extradited 13 top drug-trafficking suspects to the United States—but all from Los Zetas and other rival organzations to the Sinaloa Cartel.
On the one-year anniversary of the disappearance of 43 students in Mexico's southern state of Guerrero, thousands of protesters filled the streets of Mexico City.
The Mexican government says it has identified a second set of remains from the 43 missing students, but an Argentine forensic team working on the case questions the claim.
An Inter-American Commission on Human Rights report calls into question the Mexican government's own investigation of the disappearance of 43 students in Guerrero.