MARION COUNTY, Fla. (WCJB)-- All week Marion County detectives have been investigating a growing number of social media threats made against both Belleview Middle School and High School.
It all started Monday night when detectives began investigating the first reported social media threat.
They quickly found a suspect and arrested a 15-year-old Belleview High School student the next day.
On Wednesday, deputies were notified of two more threats being made against the schools.
One threat was made by an unknown person who hacked into a student's phone. Detectives are still investigating that case.
Deputies have determined that the third threat made to Belleview Middle School was done by a 13-year-old student.
He told deputies that he sent out the threatening message because his teacher yelled at him in the cafeteria.
"Today over 400 students were absent from Belleview Middle School and that is an extremely high number, that's almost 40 percent of their student population. On an average day, only 10 percent of their students are absent, students were being checked out all day long, they didn't come to school, parents are scared, teachers are scared, students are concerned for their own safety, these threats are not something we take lightly here,” said MCSO Public Information Officer, Cecelia Koon.
Friday marks the second anniversary of the Marjory Stoneman Douglas shooting.
While extra staff will be on campuses throughout the day, school officials in Marion County hope it will be just a normal Valentine's Day.
"Our hope and our plan is that tomorrow is a Valentine's Day that we can celebrate and certainly honor the memories of the victims who were killed in Parkland,” said MCPS Public Relations Director, Kevin Christian.
Both of the teens arrested in Marion County face felony charges.
They are being held on no bond.