Mexican police found 11 bodies inside an abandoned car in the border state of Sonora on Thursday, and prosecutors attributed the killings to drug traffickers battling for control of the region.
Sonora's state prosecutors said in a statement that the men had been shot to death and nine of them had their legs and arms cut off. They were found inside a sport utility vehicle, which had been stolen in neighboring Arizona, on a road between the towns of Caborca and Sonoyta.
A threatening message was left with the bodies but prosecutors didn't say what the message said.
Police are investigating whether the killings are tied to an attack on the village of Plutarco Elias Calles where four people were abducted and assailants opened fire on the police station Wednesday night.