Letter with ricin sent to Mississippi senator
WASHINGTON (KABC) -- A letter addressed to Mississippi Sen. Roger Wicker tested positive for ricin in a field test at the Senate mail facility in Landover, Maryland, according to federal law enforcement sources.
A source told ABC News that the letter is being tested in a lab for a definitive result. Senate Majority Leader Harry Reid said Capitol offices are on high alert.
All mail delivery to Capitol Hill has been stopped as a precaution.
Homeland Security Secretary Janet Napolitano declined to comment on the suspicious letter.
washington d.c., congress, national news
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