Authorities in the northeastern Mexican state of Coahuila announced Feb. 7 that they had recovered at least 500 sets of human remains from mass graves scattered across 11 municipalities—mostly in the north of the state, along the Texas border. Most of the remains were bones, which had largely survived apparent attempts at incineration. Several vats used to dissolve the remains in acid were also found in the graves. No group has been named as responsible for the killings, but Coahuila is a battle-ground in the ongoing war between the Zetas and their rivals in the Gulf and Sinaloa cartels. The Mexican media are calling the finds "narco-graves." The state Prosecutor General's office says it will take at least four months to ascertain the number of victims among the remains, much less identify them. (Latin Times, Feb. 10; Siglo de Torreón, Feb. 8; Pulso, SLP, Feb. 7)

As of April 26 environmental activists still hadn't learned the Mexican government's response to requests that the Missouri-based biotech giant Monsanto Company filed on March 26 for permission to expand the sowing of transgenic corn in four northern and western states. Monsanto asked for clearance to sow commercial crops in 28 municipalities in the state of Chihuahua, 11 in Coahuila and nine in Durango. These requests were in an addition to filings it made in January and February to carry out noncommercial pilot projects in the same municipalities and in Comondú in Baja California Sur. Another biotech company, Swiss-based Syngenta AG, filed on March 26 for permission to carry out pilot projects in the state of Sinaloa. People opposing the use of genetically modified organisms (GMO) for crops say the total requests would affect 12 million hectares.

Six people were strangled to death and one decapitated in the Mexican tourist resort of Cancún April 14—the latest mass killing to strike the city in the last few weeks. Police found the bodies of the five men and two women in a shack in the outskirts of the Yucatan Peninsula city, which has largely escaped the drug-related violence that has rocked Acapulco, a faded tourist destination on the Pacific coast. Quintana Roo authorities said the vicitms were small-scale drug dealers. In a separate incident that day, police found the body of another man in Cancún who had been gagged, bound and wrapped in sheets. (AP, April 15) The slayings come one month after seven were killed when gunmen burst into Cancún's La Sirenita (Little Mermaid) bar, targeting members of the city's taxi-drivers who were holding a meeting there. Several Cancún taxi drivers had been arrested recently for selling drugs or participating in drug-related killings, authorities said. (AP, Univision, March 15)

Authorities in Mexico's coal-producing northern state of Coahuila say that the notorious Zetas, bloodiest of the country's warring cartels, have taken over much of mining industry. Suspicions were first raised in October when top Zeta commander Heriberto Lazcano was found in a Coahuila coal mining town and killed in a shoot-out with Mexican marines. Coahuila produces some 95% of Mexico's coal at approximately 15 million tons a year, and current estimates place the Zetas' annual profits from their share of the industry at around $25 million. Former Coahuila governor Humberto Moreira said the Zetas are expanding their control over the state's mines, both legal and illegal. "They discover a mine, extract the coal, sell it at $30, pay the miners a miserable salary," he told Al Jazeera. "It's more lucrative than selling drugs."

A new report highlighting Mexico's human rights crisis finds that security forces have taken part in many kidnappings and disappearances over the six-year term of President Felipe Calderón, with the government failing to investigate most cases. Despite some controversy over the numbers, an estimated 70,000 are believed to have met violent deaths under Calderón's militarized crackdown on the cartels. But the new report, released by Human Rights Watch Feb. 20, finds that on top of this figure, possibly more than 20,000 disappeared during Calderón's term. Many were abducted by narco gangs, but all state security forces—the military, federal and local police—are also accused in "the most severe crisis of enforced disappearances in Latin America in decades."

IndustriALL Global Union, a European industrial union federation founded in Copenhagen on June 19, 2012, is calling for "mobilizations, awareness-raising activities, and letter writing" Feb. 18-24 to protest labor violations in Mexico, with a special focus on the Finnish-based auto parts multinational PKC Group. In December the company's Mexican subsidiary, Arneses y Accesorios de México, SA de CV, laid off 122 workers from its three plants in Ciudad Acuña, in Coahuila state near the border with Texas; all the members of a militant union's local executive committee were among those dismissed, and the rest were thought to be supporters of the local. PKC has since signed a contract with what the laid-off workers describe as a company union.

The Mexican Navy announced that the notorious Heriberto Lazcano AKA "El Lazca"—maximum leader of Los Zetas—was killed along with his chauffeur in a shoot-out near a baseball park in Progreso, Coahuila, Oct. 7. But two days later, the body was lost when an armed commando raided the funeral home where it was being held in the nearby town of  Sabinas. Naval authorities insist a positive identification had been made through fingerprint analysis, although the results of DNA tests are still being awaited. Mexico's Governance Secretary Alejandro Poiré blamed a "lack of coordination" between federal and Coahuila forces for the loss of the body.

Mexican naval forces announced the arrest Sept. 27 of Iván Velázquez Caballero, AKA "El Taliban" or "Z-50"—said to be a top commander of Los Zetas who had recently defected to the rival Gulf Cartel. El Taliban was said to be in a struggle with his former boss, Zeta commander Miguel Treviño Morales AKA "Z-40" for control of the "plaza" (trafficking theater) in San Luis Potosí, where the arrest took place. From 2007 until his recent break with the Zetas, he had also controlled the plazas in Zacatecas, Aguascalientes, Guanajuato, Nuevo León and Coahuila. He had a reward of 30 million pesos ($2.3 million) on his head.