Federal police in Mexico have taken over 12 towns in the state of Guerrero after authorities learned of possible connections between local law enforcement and organized crime. National Security Commissioner Monte Alejandro Rubido said at a Sunday press conference that the links were uncovered during an investigation into the disappearance of 43 students in the town of Iguala last month, Bloomberg News reports. Earlier this month, Guerrero prosecutor Iñaky Blanco said that the gang Guerreros Unidos had worked with area police and killed 17 of the missing students.