Maryland student who brought gun to school had massive weapons cache including grenades and AR-15: police -- Raw Story

Police say a high school student from Montgomery County, Maryland who brought a gun to his school last week was also in possession of a large weapons cache at his house that included grenades, an AR-15-style rifle, and a detonator for C4 landmines. ....
https://www.rawstory.com/2018/02/maryland-student-brought-gun-school-massive-weapons-cache-including-grenades-ar-15-police