A man has died after his gun went off as he was leaving the Lenoir City High School Graduation on Friday night. Christopher Sean Lampkin stood up to put his jacket on when his .38 caliber Derringer fired. The bullet struck a femoral artery in his right leg leading to significant blood loss. First Aid was immediately rendered by school SROs and first responders. Lampkin was rushed to a medical center and pronounced deceased. The gun was brought onto school property illegally but police said there was no malicious intent.