Federal agents have been implicated in one of Mexico's most notorious and unsolved crimes

© AFP/File Pedro Pardo Two Mexican federal police officers allegedly participated in the disappearance of 43 students from a rural teachers' college in the southwest state of Guerrero in September 2014, the National Human Rights Commission said Thursday, implicating national agents in the case for the first time. Citing an unidentified witness, the governmental rights body said the federal agents were involved with municipal officers in the disappearance of a group of teacher trainees in the so...