Authorities say they've found five mutilated bodies in a region of southern Mexico where 11 decapitated corpses were found just a few days ago.

An official at the Guerrero state prosecutor's office said the five were found Saturday night in the back of a vehicle abandoned in the municipality of Chilapa. The official spoke Sunday on condition of anonymity because he was not authorized to speak with the news media. He said they have not yet been identified

Guerrero is the same state where 43 students at a teachers college vanished in September after they were detained by local police and presumably handed over to a drug gang.

Authorities attribute much of the violence to internal divisions in the drug gang once led by the Beltran Leyva brothers.