The guard was an agent of the President of Mexico, drug cartels.

Mexican authorities have accused the officer of the Presidential Security Service that he was a drug agent, said "the BBC" on Sunday, December 28.
Mayor Arturo Gonzalez Rodriguez (Arturo Gonzalez Rodriguez) placed under house arrest for 40 days during the investigation. It is suspected that he had reported drug cartels "Beltrán Leyva" of the movements of President Felipe Calderon of Mexico (Felipe Calderon). The investigation is believed that informatoru narkokartel paid 100 thousand dollars.
  The representative of the President poyasnilAssociated Press, that Rodriguez was not a personal bodyguard Calderon.
It is noted that Major was arrested in Operation Clean ", which currently hold the Mexican secret service. More than a dozen high-ranking police officers and officials from the government arrested on suspicion of having links to drug cartels.
According to Mexican prosecutors, in 2008, nearly 5400 people have been killed in so-called "drug wars".
Last week, near the city of Acapulco, police discovered the bodies of eight soldiers. The bodies were beheaded. Later, a plastic bag with the heads found at the shopping center. It is possible that the crime involved drug traffickers.
"BBC notes that President Calderon recently conducted in Mexico, a large-scale operation against the drug mafia, which involved thousands of police and military.