The teen’s school feared he could carry out a mass shooting. Prosecutors nationwide are holding parents accountable for children’s access to guns.

A Texas mother has been charged with aiding her son plot a terror attack against his middle school by buying him ammunition and tactical gear, police and court documents said.

Warning signs that a San Antonio middle school student had deadly intentions had been building for months, police say. They took on a new urgency Saturday when his grandmother walked into his bedroom.