[JURIST] Detroit teenager Andrew Osantowski, accused of planning a massacre at his suburban high school, was sentenced Thursday to at least four years in prison for threatening terrorism and stockpiling weapons in his home. Law enforcement officials noted that the case seems to be among the first in the nation in which anti-terror laws were applied to school violence. Osantowski was convicted last month [JURIST report] of threatening an act of terrorism via computer after authorities found messages he posted about killing Chippewa Valley High [school website] classmates in an Internet chat room. A search of Osantowski's home turned up weapons, ammunition, and Nazi propaganda among other things. At his sentencing Ostantowski said he was "truly sorry for the things I have done. My family never raised me like this." AP has more.