Mexico's National Defense Secretariat announced on Sept. 13 that four soldiers would be arrested and charged with homicide for the killing of two civilians the night of Sept. 5 on the Monterrey-Nuevo Laredo highway in Apodaca municipality in the northern state of Nuevo León. The soldiers, from the 7th Military Zone, opened fire on a car in which members of an extended family were driving home after a party. Vicente de León Ramírez and his 16-year-old son, Alejandro Gabriel de León Castellanos, were killed; three other family members were hit by bullets, and two children, 8 and 9, were injured by broken glass. The soldiers said they shot at the car because the driver, Vicente de León's son-in-law, ignored orders to stop at a checkpoint. The family denied that there was a checkpoint and said they not been ordered to stop.

An armed commando of some 40 men with assault rifles ambushed a patrol of the State Ministerial Police (PME) in the southern Mexican state of Guerrero Sept. 18, killing eight and leaving a ninth seriously wounded. The police were attempting at arrest a homicide suspect in El Revelado, Teloloapan municipality, near the border with Mexico state. The bodies of some of the dead officers are reported to have been mutilated when they were recovered. (La Jornada Guerrero, BBC News, LAHT, Sept. 18)

Shootouts that began Sept. 13 in Matamoros, the border city in the conflicted Mexican state of Tamualipas, have left at least 25 dead. A Mexican law enforcement official who asked that his name not be used for security reasons said the violence has pitted the federal military against gunmen from both the Gulf Cartel and Los Zetas. A Sept. 13 grenade attack on the offices of the Prosecutor General of the Republic (PGR) damaged three cars outside the building. The building is located just a few blocks from the B&M International Bridge that links Matamoros with Brownsville, Tex. The bridge was temporarily closed after the attack, and authorities in Brownsville are on alert. (Brownsville Herald, Brownsville Herald, Sept. 14; ValleyCentral.com, Sept. 13)

On Sept. 16, some 25,000 gathered at Mexico City's main plaza, the Zócalo, where President Felipe Calderón delivered the traditional grito—three shouts of "Viva Mexico!"—to celebrate the 1810 uprising that resulted a decade later in independence from Spain. But bicentennial celebrations were canceled in several municipalities across the country for fear of violence, as narco gangs escalate their brutal internecine warfare. "This is not a time to celebrate, but to lament," said Victor Quintana, a federal lawmaker (PRD) in Chihuahua state. (Reuters, The Telegraph, Sept. 16)

Members of the Mexican political parties PRI, PRD and PVEM (Green Party) attacked 170 Zapatista supporters and expelled them from their homes in the Tzeltal community of San Marcos Avilés, in the municipality of Chilón, Chiapas, in retaliation for the construction of an autonomous school in the early morning hours of Sept. 9.

In what was probably Mexico's biggest jailbreak ever Sept. 10, 89 prisoners—66 facing or convicted of federal charges, mostly related to drugs and firearms—used ladders to scale the 20-foot walls of the Execution and Sanction Center (CEDES) in the border city of Reynosa in conflicted Tamaulipas state. Two guards at the facility disappeared along with them, and are assumed to have been in on the scheme. Tamaulipas' new public safety secretary, José Garza García, said 44 guards and employees of the prison are under investigation. Military sources said the Gulf Cartel is suspected of involvement. So far this year, 201 inmates have escaped from prisons in Tamaulipas. In April, armed men who arrived in 10 cars stormed another Reynosa prison and exchanged gunfire with guards, freeing 13 inmates. (AP, La Jornada, Sept. 11; EuropaPress, Sept. 10)

At least three people suffered serious injuries and 26 were arrested when fighting broke out between striking miners and others at the giant Cananea copper mine in the northern Mexican state of Sonora on Sept. 8. One of the injured, apparently a strikebreaker, was shot in the head but survived, despite initial reports that he had died.

President Barack Obama is backtracking from Secretary of State Hillary Clinton's statement comparing Mexico and Colombia. "Mexico is a large and progressive democracy with a growing economy," Obama said in a Sept. 9 interview with La Opinion, a Spanish-language newspaper in Los Angeles. "As a result, you can’t compare what is happening in Mexico with what happened in Colombia 20 years ago."