Updated

Police have found the bodies of six people who were shot to death in western Mexico, most bearing signs of torture emblematic of drug violence.

Police say four of the victims were found in a car in the city of Apatzingan, along with a message from one criminal gang threatening another. The bodies had signs of having been tortured.

A slain man was found in the port city of Lazaro Cardenas, also with a threatening message.

The sixth man was found on a highway in the city of Morelia. He had been shot in the head three times and left with a T-shirt pulled over his head and his hands handcuffed behind his back.

The victims were all found Saturday.

Mexico's drug violence has killed some 9,000 people since 2006.