Police on Wednesday found the dismembered bodies of two bodyguards who worked for the governor of the Mexican state of Nuevo Leon, the site of a violent turf war between drug cartels.
Authorities believe Gov. Rodrigo Medina's bodyguards were killed by a drug cartel. A message left near the bodies accused Medina of favoring a rival drug organization.
The message also said the bodyguards, members of Nuevo Leon's state police, took money from the feared Zetas drug cartel.
"For the Governor Rodrigo Medina: Here are two of your bodyguards, very good at collecting money from the company Z, you just came and forgot, as if you will always be in power, soon your six years will be over, lets see where you hide if not before."
Medina, a member of the opposition Institutional Revolutionary Party, or PRI, is under pressure from citizens to put an end to the spiraling drug violence. On his Twitter account, he said he would not be cowed by the menace.
Medina confirmed that the victims were part of his security detail and called the killings "cowardly." He told local media later that "no message, no threat will make us stop in this fight" against organized crime.
Medina later offered his condolences to the victims' families at a news conference but declined to provide more information about the attack or the bodyguards' names.
The bodies were found at an intersection in Guadalupe, a suburb of the state capital Monterrey. The city, Mexico's third largest and one of its most wealthy, has been the scene of bloody cartel turf battles that have included frequent attacks on police.
Monterrey is home to some of Latin America's biggest companies and its annual income per capita is double the national average at $17,000. But it has become one of Mexico's most violent cities with more than 650 drug war deaths so far this year, more than in all of 2010.
Once considered a model city, the manufacturing center of 4 million people 140 miles from Texas has witnessed a rapid increase in drug violence since President Felipe Calderon began his fight against the cartels in late 2006. Some 40,000 people have died across Mexico since then.
The area in northern Mexico has been a scene of constant killings and reprisals since a rupture between the Gulf and Zeta cartels in late 2009.
Since then the Zetas are fighting an alliance of the Gulf and Sinaloa cartel for control of Nuevo Leon and its smuggling routes into the United States.