 We've since received more information from the FBI about that shooter who was killed in the midst of these events. Here is an article about it from the Philadelphia Inquirer. The FBI identifies the gunman as Thomas Matthew Crooks. Federal authorities on Sunday named Thomas Matthew Crooks, 20, of Bethel Park, Pennsylvania, as the gunman who shot at former President Donald Trump in what they described as an assassination attempt during a campaign rally a day earlier in western Pennsylvania.