Morgan Gliedman, a 27-year old graduate of Manhattan’s elite prep school Dalton and the daughter of one of New York Magazine’s top doctors of 2012, was arrested along with her Harvard-educated boyfriend, Aaron Greene; both were charged with with felony possession of an explosive with intent to use and felony possession of a weapon, and Gliedman was also charged with four counts of felony grand larceny for credit card theft.

Along with a sawed-off shotgun — a customized 12-gauge Mossberg 500 — police discovered nine high-capacity rifle magazines, a flare launcher and a stash of a powerful powdered explosive called Hexamethylene Triperoxide Diamine, or HMTD, which was same explosive used in at least two prior terrorist attacks. The explosive is so powerful that, according to the New York Post, police evacuated several nearby apartments. Police also found “papers about creating homemade booby traps, improvised submachine guns, and various handwritten notebooks containing chemical formulas.”

Fun detail regarding this story: Morgan Gliedman apparently was nine months pregnant and went into labor not long after her arrest. So yeah, there’s that.