 Meanwhile, back in Pennsylvania, Karen, investigators are hunting for any clues into what may have driven the suspect to try to assassinate Trump. The shooter who was taken out at the scene has been identified as 20-year-old Thomas Matthew Crooks. Kevin Rojack is the FBI special agent in charge of the Pittsburgh Bureau. At this time, the information that we have indicates that the shooter acted alone. At present, we have not identified an ideology associated with the subject.