The Ohio's Bureau of Criminal Investigation was called in to investigate an incident at a Newton Falls school.

Newton Falls Police have not revealed much about the investigation taking place over actions that occurred at the Newton Falls Junior High, because students are involved. Chief Gene Fixler told 21 News that he was called by the School Superintendent, and then he called the Bureau of Criminal Investigations.

"We have the forensic experts from BCI are involved, involving forensic evidence, being handwriting and fingerprints," said Chief Fixler.

Lisa Slater, whose son was one of a dozen students who was sent home in April, said even after she pulled her son out of school she heard the letters were still showing up.

"Different notes found. He wasn't the only one finding them. There were several kids finding them. There were several other kids finding these. There were 12 kids total pulled from the school for this emergency removal," said Slater.

Slater criticized the school's handling of the situation, saying they did not call parents immediately, searched and questioned her son without her or his attorney present. She said her son has said that he did not send the letters. But, she understands the need to find out who was sending the threatening notes to the middle school teacher. Slater hopes the situation is resolved quickly.

The police chief expects the lab tests from the state to be completed soon. He added it will be much better for the student, or students, who did this to come forward now.

"It's our responsibility to not only protect students, faculty, staff. That's the job of a police department and that's what were going to do," said Chief Fixler.