A piece of mail delivered to the Pentagon mail facility has initially tested positive for ricin, according to two US defense officials.
The mail facility is in a separate building on the grounds of the Pentagon and the piece of mail which tested positive never entered the Pentagon building.
The FBI and the Pentagon Force Protection agency are responding and further testing is expected to be done by the FBI, the officials said.
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Update: FBI responding to suspected ricin in 2 packages sent to Pentagon (Military Times)
WNU Editor: This is a breaking news story. It will be updated as more news becomes available.