Both letters were postmarked in Memphis, Tenn., according to the Associated Press. Both said “to see a wrong and not expose it, is to become a silent partner to its continuance.” Both were signed “I am KC and I approve this message”.
Sen. Claire McCaskill (D) of Missouri said the Capitol Police have a particular suspect in mind in this case. It is someone who “writes a lot of letters to members” she said, according to the Associated Press.
Where ricin is involved, preliminary tests can be inaccurate. Full laboratory tests will be needed to confirm the poison’s presence.
Lawmakers were made even more nervous by reports from some states that district offices were also getting questionable mail. Republican Sens. Jeff Flake of Arizona and John Cornyn of Texas both said that letters set aside as suspicious by staff members back home had been tested by law enforcement and found harmless. Democratic Sen. Carl Levin of Michigan said a letter sent to his Saginaw office was still being checked.