So far very little has been uncovered about Crooks and what led to his shooting of Trump, which injured others and fatally wounded former firefighter Corey Comperatore on July 13.
The bombshell developments in the investigation into the assassination attempt at Trump's Butler, Pennsylvania, rally came during a Senate hearing Tuesday.
Congress dragged in the Secret Service's new acting head Ronald Rowe and THPT the number two at the FBI, Deputy Director Paul Abbate, to testify on the shooting.
Abbate revealed that at least one social media account on an unnamed platform believed to be associated with Crooks was discovered by the FBI. That account posted over 700 comments between 2019 and 2020, he added.
