The US Supreme Court on Nov. 30 denied (PDF) certiorari in an appeal by Mexican states attempting to sue BP over the 2010 Gulf of Mexico oil spill. The court let stand a lower court ruling in Veracruz, Mexico, et al. v. BP, P.L.C., et al, finding that the states of Veracruz, Tamaulipas and Quintana Roo cannot bring suit against BP because Mexico's federal government owns the affected property. The lawsuit sought damages for the cost of responding to the spill, contamination of the water and shoreline and lost tourism. The Mexican federal government filed a similar suit in 2013, which is currently being heard.

Maya indigenous peasants in Mexico's southern state of Chiapas are marching cross-country to oppose violence by the local narco gangs and the corruption of local authorities that protect them. The "pilgrimage" left the rural town of Simojovel some 15,000 strong at the end of March, and is now arriving at the state capital Tuxtla Gutiérrez, some 240 kilometers away through rugged country. The pilgrimage was organized by the Catholic pacifist group Pueblo Creyente (Faithful People) with the support of the local diocese of San Cristóbal de Las Casas in response to a wave of narco-violence in Simojovel.

Mexican authorities on March 4 announced the capture of Omar Treviño AKA "Z-42"—leader of Los Zetas, the ultra-violent narco-paramilitary network that has long terrorized the country. Z-42 was detained without a shot being fired by federal police and soldiers in San Pedro Garza García, an upscale suburb of northern industrial hub Monterrey, officials said. US DEA chief Michele Leonhart congratulated Mexico, saying the bust "strikes at the heart of the leadership structure of the Zetas." The US State Department had a $5 million price on Treviño's head, while Mexican authorities offered $2 million.

Police agents in San Fernando in the northeastern Mexican state of Tamaulipas aided Los Zetas drug gang in carrying out massacres of hundreds of Central American migrants and others in 2010 and 2011, according to a partially redacted document declassified by Mexico's Attorney General's Office (PGR). Although collusion between local Tamaulipas police and criminal gangs was already well known—US diplomatic cables released by the US government in 2013 discussed it, and locals refer to the police as "polizetas"—this is first time that the PGR has been required to release a document from an ongoing criminal investigation. Previously federal prosecutors had insisted that Mexican freedom of information laws didn't apply to open investigations. The document is now available on the website of the Washington DC-based National Security Archive, along with other relevant documents, including reports from US government agencies and US diplomatic cables released by the WikiLeaks group.

Mexico's northeastern border state of Tamaulipas, right on the South Texas line, continues to suffer the worst of the narco-violence that has been tearing the country apart for years—but with little media attention, as the local press is too terrorized by the cartels to even cover them. Now, courageous "citizen journalists" who have been taking up the slack are being targeted. Daily Beast on Oct. 21 noted the case of a crusading micro-blogger in the border town of Reynosa who went by the handle "Felina" (@Miut3) and used a photo of Catwoman as her Twitter avatar. Felina was an administrator of reader-generated Valor por Tamaulipas, which aggressively reports the frequent shoot-outs, slayings and abductions—in defiance of threats from the narcos. Last year, one narco-gang even distributed leaflets throughout Tamaulipas offering a reward of 600,000 pesos ($48,000) for anyone who would reveal the names of the site's administrators. Finally, on Oct. 8, Valor por Tamaulipas received the following tweet: "We're coming very close to many of you watch out felina." It wasn't a bluff...

Mexican authorities on Oct. 1 claimed another coup against the cartels, announcing the arrest of Héctor Beltran Leyva, last remaining kingpin of the Beltran Leyva Organization—the declining crime machine that once controlled much of the west and central parts of the country. Beltran Leyva was taken into custody by army troops "without a shot fired" as he dined in a seafood restaurant in the tourist town of San Miguel de Allende, Guanajuato state. (LAT, Oct. 1) The capture follows that earlier this year of the Sinaloa Cartel's long-fugitive jefe máximo Joaquin Guzmán Loera AKA "El Chapo"—marking another score for President Enrique Peña Nieto, and his supposed new and more sophisticated policy against the cartels.

Mexican authorities unearthed five recently buried bodies from a clandestine grave in the rural pueblo of Mochicahui, El Fuerte municipality, Sinaloa state, officials announced July 21—the latest in a long string of such gruesome finds that the press in Mexico has dubbed narco-fosas, or narco-graves. Sinaloa state prosecutors were tipped off by a local resident whose family member was among the disappeared. Peasants in the region are terrorized by the Sinaloa Cartel, which makes a grisly example of those unwilling to cooperate in its drug-running operations. (EFE, July 21)

Mexico's government has pledged to deploy more security forces to Tamaulipas—right on the Texas border, and one of the country's most violent states. Mexican Governance Minister Miguel Angel Osorio promised a "new phase" of action against the state's warring drug cartels. The move was prompted by the May 5 assassination of Salvador Haro Muñoz, the Tamaulipas state government intelligence chief, in an ambush on his car in the state capital, Ciudad Victoria. Ten officers from the Tamaulipas state police force have been arrested by federal authorities in connection with the hit, which was said to have been carried out by the Zetas narco-paramilitary network. Also detained was José Manuel López Guijón, security chief for Tamaulipas Gov. Egidio Torre Cantú.