COUNCIL BLUFFS, Iowa (AP) — The mother of a Council Bluffs high school student has been arrested for a Facebook post that made reference to a school shooting, but the woman’s attorney says she was simply venting frustration that her son is being bullied at school.

Police say 39-year-old Teri Pallat was arrested Monday on suspicion of making terroristic threats and first-degree harassment. Her arrest came after she posted a message on her Facebook page that said “this is exactly why” school shootings happen.

Pallat’s attorney, Michael Murphy, said Pallat’s son has been the target of bullying and at least one assault at school, and that school officials have done nothing to stop it.

Lewis Central High School Principal Joel Beyenhof says the school looks into every bullying accusation.