The FBI identified the shooter, who is dead, as Thomas Matthew Crooks of Bethel Park, Pennsylvania. A motive was not clear. Authorities identified the gunman as a 20-year-old man from Bethel Park, Pa., a town about an hour's drive from the site of the shooting. The portrait pieced together so far of the 20-year-old nursing home aide who allegedly tried to assassinate Donald Trump at an election. The 20-year-old who was killed by U.S. Secret Service was a registered Republican who worked at a nursing home. Crooks' political affiliations painted a picture of a conflicted young man. Despite a donation to the liberal ActBlue on President Joe. US security agencies have identified 20-year-old Thomas Matthew Crooks of Bethel Park, Pennsylvania as the suspect in the attempted. The employer of Thomas Matthew Crooks, the shooter in former President Donald Trump's assassination attempt, released a statement on Sunday. Students who attended Bethel Park High with shooting suspect Thomas Matthew Crooks recalled a video game enthusiast without many friends. Law enforcement officials said federal agents are still working to understand when and how Crooks obtained the gun used in the attempted.