Eleven decapitated bodies bearing signs of torture were found in a suburb of Merida, the capital of Yucatan state in eastern Mexico, an AFP photographer reported.
The headless male bodies were found piled on top of each other and covered with blankets in a rural area in the Merida suburb of Chichi Suarez on Thursday.
Some of the cadavers also had their legs tied, an AFP photographer saw.
One was completely naked, while others wore denim clothing. Some of the murdered men had tattooed arms.
Police have yet to give a report on the find.
A top Mexican public security official who visited Merida yesterday said the city had remained largely untouched by the drug wars that have left more than 2,600 dead in Mexico so far this year.
Hours later, the bodies were found.
Just four drug-related murders had been reported in Yucatan state this year, according to El Universal newspaper.
Decapitated bodies have appeared in southern and northern Mexico, and authorities say they are revenge killings between rival drug cartels.