Six men were found hanged and at least six more bodies were found buried in a pit in southwestern Mexico, in the latest gruesome violence to hit the country, officials said.
Three of the men were found hanged from a highway bridge in Tecpan de Galeana 120 kilometres northwest of the Pacific resort town of Acapulco, Guerrero state deputy prosecutor Fernando Monreal Leyva said on Tuesday.
Another three men were found a day earlier hanged in the nearby town of Rodesia, "with their hands tied and signs of torture", Leyva said.
The method of hanging victims from highway bridges for motorists to see has been one of the fear tactics used by Mexico's feuding drug cartels in recent months, but until now it had mostly been seen in the north.
In the neighbouring state of Michoacan, soldiers patrolling on a rural road discovered a mass grave containing the remains of six to nine people, a military official said.
The bodies were found in an abandoned camp that criminals had apparently used to torture, kill and incinerate their rivals.