Mexican federal forces are taking over security in the municipality of Mexico . Mexican Army and Federal Police forces are on the way to the municipality , where authorities are investigating the disappearance of 43 students after a night of violence last month . dozens students went missing there Monday , and mass graves were found . `` I am outraged and troubled by this situation , '' Iguala 's President says .
Mexican federal forces are taking over security in the municipality of Mexico . dozens students went missing there Monday , and mass graves were found . `` I am outraged and troubled by this situation , '' Iguala 's President says .