The suspect behind several suspicious letters that were sent to the White House and the Pentagon in early October 2018 has reportedly been taken into custody.
The envelopes, which were intercepted by the Secret Service and the Pentagon's mail room staff, reportedly tested positive for ricin, a potentially deadly substance, especially in a pure, powdered form. The letters sent to the Department of Defense were addressed to Secretary of Defense Jim Mattis and Chief of Naval Operations Admiral John Richardson. The letter sent to the White House was addressed to President Donald Trump.
The White House.
(Photo by Daniel Schwen)
The suspect was identified by a return address on one of the letters sent to the Pentagon, Fox News reported on Oct. 3, 2018.
While the FBI has been spearheading the investigation, the Pentagon has been providing regular updates to reporters.
On Oct. 1, 2018, the Pentagon Force Protection Agency detected a suspicious substance during mail screening at the Pentagon's remote screening facility," DoD spokesman Col. Rob Manning told Business Insider in an emailed statement, further explaining that "all USPS mail received at the Pentagon mail screening facility yesterday is currently under quarantine and poses no threat to Pentagon personnel."
Pentagon spokeswoman Dana White provided additional information on Oct. 3, 2018, revealing that at least one of the letters sent to the DoD contained castor seeds, from which ricin is derived.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.
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