ST. PETERSBURG, Fla. — A 14-year-old Pinellas County high school student has been arrested and charged with making a school shooting threat.

According to the Pinellas County Sheriff's Office, the Hollins High School student posted written threats to Instagram Wednesday afternoon.

Detectives assigned to the Investigative Operations Bureau arrested him late Wednesday night. He was charged with threat of a mass shooting.

According to investigators, school resource deputies were contacted about Instagram postings that appeared to target the school.

One post depicted an AK-47 assault rifle with the caption "What up Dixie" and the hashtag #bullseye.

The second post was a picture of the front of Hollins High School with the caption "Wouldn't go to school tomorrow."

A third posting showed two AR-15-style rifles with the caption, "Can't wait to use those."

Detectives began to investigate the posts that appeared under the anonymous username, "ano.nymousshooter."

Working with the social media platform, investigators obtained the phone number used to create the anonymous account and linked it to the teen.

Authorities said during an interview with investigators, the teen admitted to posting the images which were downloaded from the internet.

Detectives confirmed the teen does not have access to any firearms and do not believe there is any ongoing threat to the school.

The Pinellas County Sheriff's Office remains committed to keeping our schools, our children, and our community safe. Any person with information on this threat or other threats like it are asked to notify the sheriff's office immediately at (727) 582-6200. Always remember if you see something, say something.