 The latest on the attempted assassination investigation from CBS's Meg Oliver. The FBI has completed searching the shooter's vehicle and his home, and they're also analyzing his electrical devices, including his cell phone. So far, they have not turned up anything in relation to a motive or his beliefs. We also confirmed today that on the day of the attempted assassination, the shooter bought a box of ammunition with 50 rounds for his AR-style rifle that was purchased legally by his father in 2016.