ACAPULCO, Mexico — Police found the bodies of 15 slain men, 14 of them headless, on a street outside a shopping center in the Pacific coast resort of Acapulco on Saturday.
The victims, all of whom appeared to be in their 20s, were discovered in an area not frequented by tourists.
Handwritten signs left with the bodies were signed by "El Chapo's People" — a reference to the Sinaloa cartel, headed by drug lord Joaquin "El Chapo" Guzman — said Fernando Monreal Leyva, director of investigative police for Guerrero state, where Acapulco is located.
The narco-messages indicated the Sinaloa cartel killed them for trying to intrude on the gang's turf and extort residents.
Mexico's drug cartels have increasingly taken to beheading their victims in a grisly show of force, but Saturday's discovery was the largest single group of decapitation victims found in recent years.
In 2008, a group of 12 decapitated bodies were piled outside the Yucatan state capital of Merida.
The same year, nine headless men were discovered in the Guerrero state capital of Chilpancingo.
Acapulco has been the site of fierce battles between drug gangs, and this weekend got off to a bloody start with 27 people killed there from Friday evening to early Saturday, Leyva said.
The dead included two police officers cut down on a main bayside avenue in front of tourists and locals; six people who were shot dead and stuffed in a taxi, their hands and feet bound; and four others elsewhere in the city.
At least 30,196 people have died in drug-related violence since President Felipe Calderon launched an offensive against cartels in late 2006.