MONTERREY - 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.

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.

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.

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.

The Zetas - founded by a group of deserters from an elite army unit - have extended their territory so much that they are now carrying out killings and trafficking drugs in Guatemala.

The chief prosecutors of Guatemala and Mexico met Wednesday to discuss the problems posed by the criminal group, which is blamed in the massacre of 27 ranch workers in the Peten region of Guatemala in May.

Mexican Attorney General Marisela Morales and her Guatemalan counterpart, Claudia Paz, agreed to increase information-sharing about the cartel and combat the flow of arms in and around the two countries' border.