BREAKING FROM FOX NEWS—

A substance in a letter was sent to the office of Sen. Roger Wicker (R-MS) today.

The letter was caught before it reached the senator’s office.

The substance was confirmed to be ricin poison.

Via Special Report:



RICIN is a highly toxic, naturally occurring protein. A dose as small as a few grains of salt can kill an adult human. The LD50 of ricin is around 22 micrograms per kilogram (1.78 mg for an average adult, around 1⁄228 of a standard aspirin tablet/0.4 g gross) in humans if exposure is from injection or inhalation.

UPDATE: Sen. Claire McCaskill said the letter came from someone who regularly writes to politicians.