A suburban Philadelphia teacher is accused of threatening her own school in anonymous notes that included messages like "Die Today" and other promises to kill people, according to a report on MyFOXPhilly.com.

Susan Romanyszyn, a fourth-grade teacher in Warminster, Pa., was arrested on charges she was behind the threats at Longstreth Elementary School that had students, teachers and parents on edge for weeks, MyFOXPhilly.com reports.

Romanyszyn has been a teacher at the school for several years but on a leave of absence since October. Officials think she was upset about not getting a fifth-grade teaching position she wanted.

Click here for more on this story from MyFOXPhilly.com.