Fake threats cause chaos in Tennessee schools.

Unsubstantiated threats on social media caused some schools in West Knoxville and Jefferson County to go on precautionary lockdowns, but there were no known credible threats to any schools in Knoxville. The Knox County Sheriff's Office determined that a student's Snapchat threat was a hoax similar to one received in a Florida school system last week. Schools are operating on a regular schedule, and local law enforcement is in communication with state agencies. False active shooter calls across the state disrupted schools on Wednesday.