PINELLAS PARK â Pinellas County Sheriffâs deputies arrested a 13-year-old student at Pinellas Park Middle School Feb. 22 after she threatened to shoot up her school in a Snapchat post. She was transported to the Juvenile Assessment Center and charged with written threats to conduct a mass shooting. According to a media release, investigators received an anonymous tip on the night of Feb. 21, stating that the 13-year-old had threatened to shoot up her school in a Snapchat post, which was reposted to TikTok. In the post, the girl wrote, "I'm Can't be the only one who want to shoot up my school, not going to do it just a thought." It then reads, "Are you ok, no it's Monday tomorrow."