FBI Investigates Suspicious Powdery Substance Sent to Multiple Congressional Offices

Federal authorities, including the FBI and hazmat crews, are investigating suspicious envelopes containing a powdery substance sent to multiple congressional offices in Northern California and potentially nationwide. Staff at the offices of Representatives Kevin Kiley, Doris Matsui, and Ami Bera were affected, with the material immediately quarantined. This incident is being treated as potentially hazardous, prompting an active investigation into the widespread threat to public safety.