Threatening messages containing suspicious powder and previously only sent to lawmakers’ district offices have now been directed to congressional offices on Capitol Hill.
On Monday, Senate Sergeant at Arms Terry Gainer circulated an email to Senate offices, warning them to remain alert regarding the mailings.
“In addition to the suspicious letters sent to Senate state offices last week, similar letters addressed to Senate offices in D.C. have been received,” wrote Gainer.
Last week, district offices for lawmakers including Sens. Joe Lieberman (I-Conn.), Patty Murray (D-Wash.) and Pat Roberts (R-Kan.) received such letters, according to local news reports.
The offices on Capitol Hill to have received mail threats have yet to be revealed.
“We are not disclosing the identities of the offices that have received the mail,” a Senate Sergeant at Arms employee told The Hill Monday.
The Capitol Police did not immediately respond to a request for comment on the matter Monday.
According to Gainer, the letters were all intercepted at the Senate’s off-site mail screening facility Monday morning. Tests of the letters thus far indicate they contain no hazardous materials.
Gainer also assured congressional staff that the FBI and Capitol Police continue to investigate the matter, and that there would be no interruption of congressional mail delivery.