Police in Mexico's Guerrero state say they have found seven bullet-riddled bodies in the resort town of Zihuatenejo.
Guerrero state police say the victims were found Sunday.
A local newspaper has published a photograph of the bodies, showing messages lying near the half-naked and bloodied victims whose feet were tied to a street pole. The messages claimed to be from the Knights Templar, an offshoot of the La Familia drug gang.
Elsewhere in Mexico Sunday, gunmen opened fire on a vehicle in Mazatlan, in Sinaloa state, killing three men and two women. Sinaloa is home to El Chapo's People, a drug cartel headed by one of Mexico's most wanted men, Joaquin Guzman.
Mexican President Felipe Calderon began a crackdown on illegal drug activity in 2006. More than 40,000 people have been killed in the resulting Mexican drug wars.
Some information for this report was provided by AP and AFP.