FBI unable to identify a motive in Trump assassination attempt

The video discusses the investigation into Thomas Matthew Crooks, who attempted to assassinate former President Donald Trump. The FBI has not found a motive or any co-conspirators, and Crooks acted alone. He fired eight shots, and a Secret Service sniper killed him. Crooks had researched explosive devices but purchased materials legally. The autopsy showed no drugs or alcohol in his system. The investigation is ongoing, with over 1000 witnesses interviewed. The Secret Service's response is under separate investigation.

What was revealed about the improvised explosive devices found in Crooks' possession?

What did the FBI conclude about the motive behind Crooks' actions?

How did the FBI describe the nature of the attack on former President Trump?