Peru's Congress has opened a high-profile investigation into a contract with Israeli security firm Global CST, entered into by the previous government of Álan García, after an audit by the Comptroller General of the Republic found irregularities in the deal. The probe concluded that the Peruvian state had lost $16 million when the firm failed to fulfil terms of its contract with the Armed Forces Joint Command. A congressional oversight commission has questioned three former cabinet members in the scandal—ex-housing minister Hernán Garrido, and ex-defense ministers Ántero Flores Aráoz and Rafael Rey—as well as ex-Joint Command chief Gen. Francisco Contreras. Special anti-corruption prosecutor Julio Arbizu has called on García himself to testify before what is being called the Mega-Commission, and for the attorney general's office, or Fiscalía, to investigate the former president. 

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.

Officially, US State Department aid to the Honduran National Police must bypass units under the direct supervision of the force's overall commander, Director General Juan Carlos Bonilla AKA "El Tigre"—who in 2002 was accused of three extrajudicial killings and links to 11 more deaths and disappearances in so-called "social cleansing" operations. He was tried on one killing and acquitted; the other cases were never fully investigated. But an investigation by the Associated Press, based on interviews with unnamed Honduran officials, finds that all police units are actually under Bonilla's direction. Speaking on record was Celso Alvarado, a criminal law professor and consultant to the Honduran Commission for Security and Justice Sector Reform, who said the same. "Every police officer in Honduras, regardless of their specific functions, is under the hierarchy and obedience of the director general," he said.

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.

Accused Burmese drug lord Naw Kham was executed in China on March 1 along with three accomplices in the murder of 13 Chinese merchant sailors on the Mekong River in 2011. The executions were carried out by a court in Kunming, Yunnan province. Thai national Hsang Kham, Lao national Zha Xika, and Yi Lai, who was named as "stateless," were executed by lethal injection along with Naw Kham. In an unusual move, authorities allowed state media to film Naw Kham during his transfer from a detention center to the court's execution area. China Central Television showed police removing Naw Kham's handcuffs and binding his arms behind his back with rope, a standard ritual before executions in China. The executions themselves were not broadcast, as cameras were not allowed in the death chamber. But the spectacle still sparked dissent on the Internet within China.