A Maury County grand jury will hear the case against a Columbia teen arrested last weekend for threatening to go on a rampage similar to the one in Connecticut.
Shawn Lenz, 19, waived his right to a preliminary hearing Wednesday morning and his case was bound over to the grand jury.
He appeared in court in handcuffs and wearing an orange and white striped jumpsuit.
Lenz was arrested Sunday after posting on Facebook, "feel like goin on a rampage, kinda like the school shooting were that one guy killed some teachers and a bunch of students."
Following his arrest, deputies seized a 12-gauge Maverick shotgun, SKS rifle, shotgun shells, a machete and a laptop from his bedroom.
Lenz remains in the Maury County jail on a $750,000 bond.
He will undergo a mental evaluation.