On June 4 Mexican army soldiers freed 165 people, mostly Central Americans, who the authorities said had been held for as much as three weeks by an unidentified criminal organization at a safe house in Las Fuentes, Gustavo Díaz Ordaz municipality, a few miles from the US border in the northeastern state of Tamaulipas. One person, apparently a lookout for the kidnappers, was arrested. The captives were reportedly migrants planning to cross illegally into the US; the smugglers ("polleros") they had hired may have turned them over to a criminal group, possibly the Gulf drug cartel or the Los Zetas gang.

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)

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.

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."

At least 26 are dead, 50 injured and seven still missing after a Sept. 18 explosion at a Petróleos Mexicanos  (Pemex) gas pipeline distribution center on the outskirts of Reynosa, on the Texas border in Tamaulipas state. The dead include four Pemex employees and 22 private contractors. The pipeline serves wells in northern Mexico's Burgos basin, which have been repeatedly attacked for pilfering by criminal gangs such as Los Zetas. Last month, Pemex said the amount of petroleum products stolen in the first half of this year is up 18% compared to 2011, totalling more than 1.8 million barrels. But the company denied that criminal activity was linked to the Reynosa blast. (Brownsville Herald, Sept. 19; OilPrice, Aug. 21)

Mexican naval forces in the oil port of Tampico, Tamaulipas, on Sept. 13 arrested Jorge Eduardo Costilla Sánchez AKA "El Coss"—notorious leader of the Gulf Cartel—along with five cohorts, apparently without resistance. Authorities hailed it as a major blow against the cartel, coming just a week after the arrest of another Gulf kingpin, Mario Cárdenas Guillén AKA "El Gordo" (Fatso), captured by Mexican marines in Altamira, also in Tamaulipas—the brother of Osiel Cárdenas Guillen, who led the cartel until he was detained in 2003.