Seven were killed March 29 when a masked gunman in a bullet-proof vest and black uniform opened fire with an AK-47 in a bar in in the commercial center of Chihuahua City in northern Mexico. Three of the dead were women who worked at the bar, called Mogavi. The city has seen a wave of violence as the Juárez Cartel and Sinaloa Cartel battle for control of the strategic corridor leading to the border town of Ciudad Juárez, immediately up the highway to the north. In a similar incident that night, gunmen opened fire in a bar in Ciudad Altamirano, Guerrero state, killing four civilians and three off-duty federal agents. The previous night, an armed commando raided a nightclub called La Habana in Oaxaca City, in Mexico's south, menacing staff and patrons with AK-47s, shooting up the bar's facade, and abducting one man identified only by his nickname, "El Chiquilín."

Following the slaying March 25 of a "Community Police" commander in Tierra Colorada, on the Acapulco-Mexico City highway in Guerrero state, members of the popular militia (usually refered to as "vigilantes" in English-language accounts) set up roadblocks on the town's main arteries, occupied public buildings, and detained 12 of the municipality's "official" police as well as the public security director. The town's mayor, Elizabeth Gutiérrez Paz, was also briefly detained with her bodyguards. The others are still being held to demand justice in the slaying, which the Community Police say was carried out with the complicity of official authorities. The bullet-ridden body of Guadalupe Quinones Carbajal, 28, was found in a nearby town. Guerrero's Prosecutor General Martha Elba Garzón has been dispatched to Tierra Colorada, which is the seat of Juan R. Escudero municipality, to negotiate with the Guerrero Union of Pueblos and Organizations (UPOEG), which coordinates Community Police forces in the state. (Global News Desk, Christian Post, March 28; La Jornada Guerrero, March 27; Sipse, Grupo Fórmula, Reforma, March 26)

About 253,000 firearms are bought in the US and transported illegally into Mexico each year, according to estimates published on March 18 by researchers at the University of San Diego's Trans-Border Institute and the Rio de Janeiro-based Igarapé Institute. The researchers' report, "The Way of the Gun: Estimating Firearms Traffic Across the US-Mexico Border," estimates that these sales generate $127.2 million a year in revenue and account for about 2.2% of the annual firearms sales in the US. During 2010-2012 an estimated 46.7% of federally licensed firearm dealers "depended for their economic existence on some amount of demand from the US-Mexico firearms trade to stay in business," the report says.

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."

Two women are among the dead in a fierce gun battle that claimed five lives March 16 in Reynosa, Tamaulipas, just across the Mexican border from Hidalgo, Tex. Tamualipas state authorities said the women were among the combatants. The fire-fight came one day after Mexican federal police found more than five tons of marijuana, 370 pounds of crystal methamphetamine and a large weapons cache in underground bunkers in Reynosa—including 20 rifles, 10 bulletproof vests, a gas grenade, 20 uniforms, radios and tire spikes. March 11 also saw a three-hour gun battle in the streets of Reynosa, with rival narco-factions using automatic weapons and grenades. Authorities were absent for most of the shoot-out that left some three dozen gunmen and two bystanders dead—one just a teen. An exact death toll was elusive, as cartel gunmen collected their own dead during the battle.

Thousands of teachers from the National Education Workers Coordinating Committee (CNTE), the largest dissident group in Mexico's 1.5 million-member National Education Workers Union (SNTE), marched in Mexico City on March 5 to protest a series of "educational reforms" that President Enrique Peña Nieto signed into law on Feb. 25. The teachers were also demanding the resignation of the new SNTE president, Juan Diaz de la Torre, who they say was appointed in a backroom deal after the Feb. 26 arrest of former president Elba Esther Gordillo Morales on charges of embezzling $157 million from union funds. According to the Federal District (DF, Mexico City) police, some 7,000 protesters joined the march from the central Zócalo plaza to the Los Pinos presidential palace, where a 10-member delegation presented officials with a petition.

Mexican federal agents arrested Elba Esther Gordillo Morales, president of the 1.5 million-member National Education Workers Union (SNTE), on Feb. 26 in the airport at Toluca, the capital of México state, on corruption charges. According to Attorney General Jesús Murillo Kara, Gordillo used millions of dollars from union funds to buy properties in California, to shop at the Neiman Marcus department store and to pay for plastic surgery. The arrest came one day after President Enrique Peña Nieto signed into law a series of "educational reforms" that include regular teacher assessments and measures that would limit the union's power. Gordillo opposed the new law and didn't attend the signing ceremony.

Mexican human rights activist Karla Castañeda Alvarado applied for political asylum in the US on Feb. 13 after secretly leaving her home in Ciudad Juárez in the northern state of Chihuahua with four of her children. US authorities have granted her six months to provide documentation to justify her application. The Committee of Mothers and Relatives of Disappeared Young Women, in which Castañeda was active, said it was better for her to seek asylum, noting the example of activist Marisela Escobedo Ortiz, who was shot dead by an unidentified man on Dec. 16, 2010, as she was protesting in front of the main government office in the state capital, also named Chihuahua.