The Tennessee Bureau Of Investigation Is Probing Several Hoax Calls Across The State Of Active Shooters At High Schools In Our Region. Schools In Bristol, Kingsport, Johnson City And Greeneville Were All Targeted. The TBI Said None Of These Reports Have Proven Credible. Meanwhile, A Juvenile Is In Custody After A Threat Prompted A Lockdown At Abingdon High School. It Was Later Lifted After The Threat Was Determined Not To Be Creditable. The Juvenile Will Appear In Court Soon.