Authorities found 25 bodies in recent hours in the Mexican states of Guerrero and Michoacan, two of the states hardest hit by a wave of organized crime-related violence over the past few months.
Sources with the Attorney General's Office of the southern state of Guerrero told Efe that eight bodies were found inside an abandoned vehicle on a rural road in San Miguel Totolapan and eight others in a clandestine grave in Taxco, where authorities were still searching for more corpses.
Authorities said the killings in San Miguel Totolapan, located in a region where the La Familia Michoacana and Los Caballeros Templarios gangs are known to be active, may have been the result of a clash between rival criminal outfits.
The bodies found in the clandestine grave were located thanks to an anonymous tip, a source at the state AG's office told Efe.
Separately, the Attorney General's Office of the southwestern state of Michoacan said nine other bodies were found Saturday in Tepalcatepec.
Self-styled "community police forces" have sprung up in Tepalcatepec and other Michoacan municipalities to protect their communities from attacks and extortion by criminal gangs, citing the lack of a law-enforcement presence.
On Friday, leaders of several of the Michoacan community militia groups held a meeting and demanded the release of 96 of their members arrested since April, including 46 who were detained this week in the town of Aquila.
The representatives threatened to begin blocking some government services in communities they control if those individuals are not freed.
The daily Reforma said Saturday that just over 6,000 people have died in organized crime-related violence in Mexico since President Enrique Peña Nieto took office last Dec. 1.
Guerrero and Michoacan have been two of the states with the largest number of homicides in recent months.
In the latter, the army and federal police have carried out a security operation since mid-May.
More than 70,000 people have died in drug-related violence in Mexico since 2006, when former President Felipe Calderon, Peña Nieto's predecessor, declared war on the country's drug cartels. EFE