Trump gunman Thomas Crooks leaves behind pile of mysteries

A view of police tape near the home of 20-year-old Thomas Matthew Crooks, named by the FBI as the “subject involved” in the attempted assassination of former U.S. President and Republican presidential candidate Donald Trump, Sunday in Bethel Park, Pa. (REUTERS/Carlos Osorio)

Thomas Crooks was pacing next to a warehouse building outside the Butler Farm Show grounds as a crowd gathered for one of former President Donald Trump’s signature outdoor rallies.