A Third Murdered Mayor

The mayor of El Naranjo, a small town in San Luis Potosí, was killed earlier this week while working in his office. Beyond the act itself, this is notable for two reasons: first, this is the third mayor to be killed in about a month. Second, though it lies just of Tamaulipas and Nuevo León, San Luis is not a state known for a whole lot of drug violence. Could it be that the Zeta-Gulf wars are spreading?