Illinois man arrested after allegedly sending suspicious powder to Congress members using his return address

Matthew Unglesbee, a 36-year-old from Quincy, Illinois, was arrested by US marshals on federal charges for sending threatening communications and perpetrating a hoax. Authorities state Unglesbee sent letters containing a suspicious white granular substance to four unidentified members of Congress. The substance was later identified as salt. Notably, the suspect allegedly wrote his own name and return address on the envelopes. He remains in custody following the DOJ criminal complaint regarding the incident.