Suspected ricin-laced mail sent to U.S. defense secretary

The Pentagon said on Tuesday it had received mail suspected of containing the deadly poison ricin, including an envelope that a U.S. official said was addressed to Defense Secretary Jim Mattis. The Pentagon said in a statement it had put its mail facility under quarantine and that the FBI was analyzing the envelopes. U.S. officials, speaking on condition of anonymity, said the envelopes initially tested positive for ricin after being detected by Pentagon police on Monday at a mail sorting facility.