GLEN ST MARY, Fla. — A 15-year-old Baker County High School student was arrested Monday after deputies said the student kept a notebook containing strategies for carrying out a mass shooting.

The investigation began after the Baker County Sheriff's Office said the student showed classmates the notebook, prompting a teacher to confiscate it. The book reportedly contained six pages with detailed handwritten notes that included dates and times that a shooting could happen, locations on campus where it could be carried out and the order in which people could be attacked.

The sheriff's office said the teen admitted to writing the plans but denied having the intention of going through with it.

After the interview, the teen was arrested and charged with making written threats to kill and/or conduct a mass shooting, a second-degree felony.

The teen was taken to the Department of Juvenile Justice in Gainesville. 

"This is an important reminder for our children to ‘See Something, Say Something!' Sheriff Scotty Rhoden said in a news release. "Parents and guardians, please remind your children of the importance of the ‘See Something, Say Something’ message. As a community, we will continue to work together to keep our children safe. May God continue to guide and protect everything we do to keep our schools a safe place to learn and grow.”