 to be IEDs in the car at the FBI lab in Quantico, Virginia, along with his cell phone and laptop. His family is cooperating with authorities. The gun was bought legally in 2013 by Crook's father, an AR-style rifle. That's Fox's David Spunt reporting. The FBI now has custody of Crook's cell phone and report that Crook's bought 50 rounds of ammunition before the shooting.