“The active shooter situation is being treated as a terrorism investigation,” Bill Killian, U.S. Attorney for the Eastern District of Tennessee, told reporters at an afternoon news conference here. “It is being led by the FBI’s Joint Terrorism Task Force. And we will continue to investigate it as an act of terrorism until proof shows us otherwise. We will let the facts and the evidence lead us where it may.”
Edward Reinhold, special agent in charge of the FBI’s Knoxville office, declined to specify what weapons the gunman had.