At least 15 were killed April 10 in a series of confrontations in Mexico's increasingly conflicted Michoacán state. The first confrontation began when federal police aboard a helicopter spotted armed men traveling in four vehicles at Charapando in the muncipality of Gabriel Zamora. The gunmen opened fire on the agents, who shot back and killed five, a police statement said, adding that one of those killed was high in the leadership structure of a local drug cartel, which was not named. Two police agents were reported wounded. Hours later in the town of Apatzingan, federal agents were accompanying a procession commemorating the anniversary of the death of Mexican revolutionary Emiliano Zapata when gunmen opened fire with AK-47s. Police returned fire, killing one. Another eight were killed elsewhere in Apatzingán, when gunmen attacked a police checkpoint where trucks full of harvested lime were backed up; two police were injured, but the dead were all civilians. Schools in Apatzingán and Buenavista Tomatlán municipalities have been closed due to the violence.

Five people were arrested and five injured on April 5 when some 2,000 agents of Mexico's Federal Police (PF) removed more than 3,000 dissident teachers who were blocking a highway in the southwestern state of Guerrero to protest planned changes in the educational system. The demonstration, organized by the State Organizing Committee of Education Workers in Guerrero (CETEG), tied up traffic along the highway from Mexico City to the resort city of Acapulco from about 1 pm until the police action at about 6:30 pm; the road is heavily traveled during the spring vacation period around Easter. The protest took place at the spot near the state capital, Chilpancingo, where two students and a gas station worker were killed on Dec. 12, 2011 in a confrontation between police and students from the Raúl Isidro Burgos Rural Teachers' College, in the Guerrero village of Ayotzinapa. (La Jornada, Mexico, April 6)

Some 1,200 agents from the police forces of the southern Mexican state of Oaxaca tried unsuccessfully on March 26 to remove local residents who were blocking a road leading to the Bii Yoxho wind farm, which is under construction in Juchitán de Zaragoza municipality near the Pacific coast. The operation was also intended to recover construction equipment protesters had seized on Feb. 25 in an ongoing effort to stop the completion of the wind project, which is owned by the Mexican subsidiary of the Spanish company Gas Natural Fenosa. Local prosecutor Manuel de Jesús López told the French wire service AFP that 22 people were injured in the March 26 operation, including 11 police agents, and one police agent was taken prisoner. Protesters reported eight local people with serious injuries, including Carlos Sánchez, the coordinator of Radio Totopo, a community radio station.

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.