MEXICO CITY (AP) — The Mexican army’s role in the disappearance of 43 college students and its alleged links to organized crime are now at the center of a case that has shaken the nation. The government’s Truth Commission has declared the 2014 episode a “state crime.” Three members of the military and a former federal attorney general have been arrested in the case. Few now believe the government’s initial claim putting all blame on a drug gang and allied local officials for killing the students, then burning their bodies. A recent report indicates collaboration between a drug cartel and an officer and that some of the students’ bodies were taken to a local army base.