BREAKING: DSA Address Linked to Threatening Letters with ‘Suspicious Substance’ Sent to Government Officials

“Law enforcement officials are working to intercept any additional letters before they are delivered...”

Federal authorities are investigating a series of suspicious letters sent to congressional offices, and one detail about the envelopes is already raising serious questions.

According to a breaking report from the New York Post, the FBI, U.S. Capitol Police, and U.S. Postal Inspection Service are investigating mail containing unidentified suspicious substances.

But it’s the return address on at least one envelope that has attracted particular attention.