Guerrero, Puebla and the Federal District, killing 18 and wounding more than two dozen. The EPR claims 41 dead and 48 wounded. Guerrilla forces also blocked roads in Chiapas to distribute pamphlets and seized a radio station in Tabasco. President Zedillo at his State of the Union Address (Segundo Informe de Gobierno) said: "Against terrorism, all the power of the State" in a message that terrorist acts would be prosecuted. May 1997: Two engagements left 5 soldiers and 4 guerrillas dead. 2000s July 2007: EPR claimed responsibility for several attacks against Pemex oil facilities in the Bajío region and stated that the attacks would continue until two of its members were released. The government denies responsibility for the disappearance of these 2 members. August 1, 2007: EPR also claimed responsibility for a bomb attack on a Sears store in Oaxaca, there was some damage but no injuries. On the same day the EPR also claimed responsibility for an attempted bombing of a Banamex bank branch also in Oaxaca. September 10, 2007: Pemex reported explosions due to sabotage on several pipelines located in the key energy producing state of Veracruz and further inland in Tlaxcala. According to reports, there were six explosions targeting pipelines carrying natural gas, propane, and crude oil. The effects of the explosions were so severe that they caused the evacuation of over 20,000 people from the area. The explosions caused millions of dollars in damages to Pemex equipment. Additionally, it is estimated the explosions cost the Mexican economy $100 million a day as over 2,500 businesses were affected and 60% of Mexico's steel industry was shuttered. On September 11, 2007 the EPR claimed responsibility for the explosions. Mexican government reaction Following the July 2007 pipeline attacks, President Calderón deployed 5,000 special troops to secure the pipelines, along with dams and power plants. These troops began regular patrols of the region both on the ground and in the air. However, Pemex has 60,000 km of the pipeline so it will be difficult to secure the pipelines from saboteurs. Shortly after the September pipeline attacks, the Centro de Investigación y Seguridad Nacional (Mexican intelligence service) leaked a report stating that Venezuela's President Hugo Chavez was believed to be supporting the EPR with materials, armament, and training. Mexican magazine Contralínea has announced that at least 21 members of the EPR have gone missing apparently after being kidnapped by government forces