Officials tell families of missing students about the arrest after a day of protests . The arrests come as parents and community members are demanding answers from authorities over what happened to their children in connection with the disappearance of two high school seniors last week. The 43 missing students attended la Escuela Normal Rural de Ayotzinapa , a small college devoted to training students to become teachers in Mexico 's impoverished countryside . Cesar Nava Gonzalez had been on the run since the students disappeared , authorities say . Nava allegedly helped round up the 43 students and hand them over to a drug gang .
Officials tell families of missing students about the arrest after a day of protests . The arrests come as parents and community members are demanding answers from authorities over what happened to their children in connection with the disappearance of two high school seniors last week. Cesar Nava Gonzalez had been on the run since the students disappeared , authorities say . Nava allegedly helped round up the 43 students and hand them over to a drug gang .