I think this is the first time I've read a story of a permit holder murdering anyone. It is so rare for permit holders to break laws like this.
http://abcnews.go.com/US/wireStory/police-employee-fatally-shot-supervisors-tennessee-plant-42305585
http://abcnews.go.com/US/wireStory/police-employee-fatally-shot-supervisors-tennessee-plant-42305585
Police: Man Who Shot 2 at Tennessee Plant Had Gun Permit
By THE ASSOCIATED PRESS ATHENS, Tenn. — Sep 23, 2016, 5:36 PM ET
A man who fatally shot two supervisors and then killed himself at an electrical components plant in eastern Tennessee had a state-issued permit to carry handguns in public, law enforcement officials said Friday.
"There are no appearances at this point that this was anything that was planned," Niland said. "He did have a meeting with his supervisors, and it was during that meeting that he apparently experienced some agitation."
Under a state law enacted in 2013, workers with carry permits are allowed to store firearms in vehicles parked at work regardless of their employers' wishes. Thomas & Betts manager Pat Joyce said the company has an employee policy concerning firearms, but he declined to elaborate.