Park Record Media Center

Shattered windows are seen on one side of the headquarters of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of state oil giant Pemex on Thursday, killing at least 14 people and injuring 100 others. The blast hit the lower floors of the downtown tower block, throwing debris into the streets and sending workers running outside. It was not yet clear what caused the explosion, and the death toll could still rise, he added. REUTERS/Alejandro Dias

Rescue workers head for the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex in Mexico City on January 31, 2013, following a blast inside the building. YURI CORTEZ/AFP/Getty Images

An emergency responder carries a piece of concrete as emergency workers and firefighter dig for survivor at the site on an explosion at an adjacent building to the executive tower of Mexico's state-owned oil company PEMEX, in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Eduardo Verdugo)

An injured man is being transported in an office chair outside the headquarters of state oil giant Pemex in Mexico City January 31, 2013. An explosion rocked the Mexico City headquarters of Pemex on Thursday, killing at least 14, injuring more than 100 others and causing extensive damage to the building. The blast, which media reports said was caused by machinery exploding, occurred in the basement, emergency officials said. REUTERS/Alejandro Dias

Two women react while leaving the premises of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of state oil giant Pemex on Thursday, killing at least 14 people and injuring 100 others.The blast hit the lower floors of the downtown tower block, throwing debris into the streets and sending workers running outside. Interior Minister Miguel. REUTERS/Alejandro Dias

Ambulances and rescue personnel are seen on a street outside the headquarters of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of Pemex on Thursday, killing at least 14 people and injuring 100 others. REUTERS/Bernardo Montoya

An injured woman is being transferred to a stretcher outside the headquarters of state oil giant Pemex in Mexico City January 31, 2013. An explosion rocked the Mexico City headquarters of Pemex on Thursday. REUTERS/Alejandro Dias

Ambulances pass a police line near the headquarters of state oil giant Pemex in Mexico City January 31, 2013. An explosion rocked Pemex on Thursday, killing at least 14 people and injuring 80 others, the government said. The blast, which media reports said was caused by machinery, hit the lower floors of the downtown building, throwing debris into the streets and sending workers running outside. REUTERS/Tomas Bravo

A worker belonging to Mexico's state-owned oil company PEMEX keeps journalists away after an explosion at an adjacent building to the executive tower of PEMEX in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Eduardo Verdugo)

A paramedic rushes into the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex, following a blast inside the building in Mexico City on January 31, 2013. An explosion rocked the skyscraper, killing at least 14 people. AFP PHOTO/Yuri CORTEZ

An injured person is transported on a stretcher the headquarters of state oil giant Pemex in Mexico City January 31, 2013. An explosion rocked the Mexico City headquarters of Pemex on Thursday, killing at least 14. REUTERS/Alejandro Dias

An ambulance arrives at the scene of the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex in Mexico City on January 31, 2013. An explosion rocked the skyscraper, killing at least 14 people, as a plume of black smoke billowed from the 54-floor tower. YURI CORTEZ/AFP/Getty Images

Paramedics wheel an injured person to a helicopter at the parking lot of the state-run oil company Pemex after an explosion in Mexico City January 31, 2013. An explosion rocked the Mexico City headquarters of state oil giant Pemex on Thursday, killing at least 14 people and injuring 80 people, Interior Minister Miguel Angel Osorio Chong said on Thursday. The death toll could still rise, he told local television. The blast, which media reports said was caused by machinery exploding, occurred in the basement, emergency officials said. REUTERS/Tomas Bravo

A Mexican Federal Police truck heads to the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex, following a blast inside the building in Mexico City on January 31, 2013. An explosion rocked the skyscraper, leaving up to now 14 dead and 100 injured people, according to official sources. YURI CORTEZ/AFP/Getty Images

An injured person is carried into an ambulance after an explosion at an adjacent building to the executive tower of Mexico's state-owned oil company PEMEX, in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Eduardo Verdugo)

Police block a street leading to the headquarters of state oil giant Pemex (pictured in the background) in Mexico City January 31, 2013. An explosion rocked the Mexico City headquarters of state oil giant Pemex on Thursday, killing at least 14 people. REUTERS/Tomas Bravo

Rescue workers and firefighters gather as emergency responders search for trapped survivors at the site on an explosion in a building at Mexico's state-owned oil company PEMEX complex, in Mexico City. (AP Photo/Eduardo Verdugo)

A soldier stands guard near the headquarters of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of state oil giant Pemex on Thursday, killing at least 14 people and injuring 100 others. REUTERS/Alejandro Dias

Police stand guard as a rescue team heads for the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex in Mexico City on January 31, 2013, following a blast inside the building. An explosion rocked the skyscraper, killing at least 14, as a plume of black smoke billowed from the 54-floor tower, according to official sources. YURI CORTEZ/AFP/Getty Images

A forensic ambulance arrives on the premises of the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex in Mexico City on January 31, 2013, following a blast inside the building. YURI CORTEZ/AFP/Getty Images

An emergency responder walks with a search dog as emergency workers and firefighters search for trapped survivors at the site on an explosion in a building at Mexico's state-owned oil company PEMEX complex, in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Eduardo Verdugo)

Rescuers are driven inside the premises of the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex, following a blast inside the building in Mexico City on January 31, 2013. YURI CORTEZ/AFP/Getty Images

Rescue workers and firefighters gather at the site of an explosion at an adjacent building to the executive tower of Mexico's state-owned oil company PEMEX, in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Eduardo Verdugo)

Soldiers arrive on the premises of the skyscraper that houses the headquarters of state-owned Mexican oil giant Pemex in Mexico City on January 31, 2013, following a blast inside the building. YURI CORTEZ/AFP/Getty Images

Emergency responders walk toward the site on an explosion at a building part of Mexico's state-owned oil company PEMEX complex, in Mexico City, Thursday Jan. 31, 2013. The explosion killed at least 14 people . (AP Photo/Eduardo Verdugo)

Firefighters belonging to the Tacubaya sector and emergency responders pull out a survivor after an explosion at an adjacent building to the executive tower of Mexico's state-owned oil company PEMEX, in Mexico City, Thursday Jan. 31, 2013. A large explosion occurred in the lower floors of the building and dozens have been reported injured so far. (AP Photo/Guillermo Gutierrez)

Police helicopters are stationed in the parking lot of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Pemex building on Thursday, killing at least 14 people and injuring 100 others. The blast hit the lower floors of the downtown tower block, throwing debris into the streets and sending workers running outside. REUTERS/Tomas Bravo

An emergency worker treats an injured worker of Mexico's state-owned oil company PEMEX after an explosion at an adjacent building to the executive tower of PEMEX in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Guillermo Gutierrez)

Firefighters belonging to the Tacubaya sector and workers dig for survivors after an explosion at a building adjacent to the executive tower of Mexico's state-owned oil company PEMEX, in Mexico City, Thursday Jan. 31, 2013. (AP Photo/Guillermo Gutierrez)

Soldiers are seen on a street outside the headquarters of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of Pemex on Thursday, killing at least 14 people and injuring 100 others.The blast hit the lower floors of the downtown tower block, throwing debris into the streets and sending workers running outside. It was not yet clear what caused the explosion, and the death toll could still rise. REUTERS/Edgard Garrido

An elderly man is being helped outside the headquarters of state oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of state oil giant Pemex on Thursday, killing at least 14 people and injuring 100 others. REUTERS/Alejandro Dias

A Mexican soldier removes debris from the headquarters of the state-owned Mexican oil giant Pemex in Mexico City on February 1, 2013, following a blast inside the building. An explosion rocked the skyscraper, leaving up to now 25 dead and 100 injured, as a plume of black smoke billowed from the 54-floor tower, according to official sources. AFP PHOTO/ YURI CORTEZ/AFP/Getty Images

Rescue workers walk past debris piled outside the headquarters of state-owned oil giant Pemex in Mexico City January 31, 2013. A powerful explosion rocked the Mexico City headquarters of Pemex on Thursday, killing at least 25 people, injuring more than 100 and trapping others inside. Picture taken January 31, 2013. REUTERS/Bernardo Montoya

An injured rescue worker lies on a stretcher outside the headquarters of state-owned oil giant Pemex in Mexico City February 1, 2013. The death toll from an explosion at the Mexico City headquarters of Mexican state oil company Pemex has risen to 32, but the cause of the incident is still unclear, the company said on Friday. Scenes of confusion and chaos after the explosion at the downtown tower, which also injured more than 100, dealt another blow to Pemex's image as Mexico's new president courts outside investment for the 75-year-old monopoly.REUTERS/Bernardo Montoya

Soldiers stand among debris after an explosion destroyed part of the headquarters of state-owned oil giant Pemex in Mexico City February 1, 2013. The death toll from an explosion at the Mexico City headquarters of Mexican state oil company Pemex has risen to 32, but the cause of the incident is still unclear, the company said on Friday. Scenes of confusion and chaos after the explosion at the downtown tower, which also injured more than 100, dealt another blow to Pemex's image as Mexico's new president courts outside investment for the 75-year-old monopoly.REUTERS/Alejandro Dias

Mexican soldiers and firefighters remove debris from the headquarters of the state-owned Mexican oil giant Pemex in Mexico City on February 1, 2013, following a blast inside the building. An explosion rocked the skyscraper, leaving up to now 25 dead and 100 injured, as a plume of black smoke billowed from the 54-floor tower, according to official sources. AFP PHOTO/ YURI CORTEZ/AFP/Getty Images

Rescuers search for victims amid the debris at the headquarters of the state-owned Mexican oil giant Pemex in Mexico City on February 1, 2013, following a blast inside the building. An explosion rocked the skyscraper, leaving up to now 25 dead and 100 injured, as a plume of black smoke billowed from the 54-floor tower, according to official sources. AFP PHOTO/ YURI CORTEZ/AFP/Getty Images

Mexican soldiers remove debris from the headquarters of the state-owned Mexican oil giant Pemex in Mexico City on February 1, 2013, following a blast inside the building. An explosion rocked the skyscraper, leaving up to now 25 dead and 100 injured, as a plume of black smoke billowed from the 54-floor tower, according to official sources. AFP PHOTO/ YURI CORTEZ/AFP/Getty Images

Soldiers, federal policemen and firefighters remove debris from the headquarters of state-owned Mexican oil giant Pemex in Mexico City on February 1, 2013, following a blast inside the building. An explosion rocked the skyscraper, leaving up to now 32 dead and 100 injured, as a plume of black smoke billowed from the 54-floor tower, according to official sources. AFP PHOTO/ YURI CORTEZ/AFP/Getty Images

Employees and rescue workers listen as the Minister of the Interior, Miguel Angel Osorio Chong (out of frame) addresses a press conference at the headquarters of state-owned Mexican oil giant Pemex in Mexico City on January 31, 2013, following a blast inside the building. An explosion rocked the skyscraper, leaving up to 25 dead and 101 injured, as a plume of black smoke billowed from the 54-floor tower, according to official sources. AFP PHOTO / YURI CORTEZ/AFP/Getty Images