Two mail items delivered to the Pentagon's mailbox on Monday were initially tested positively for Ricin, according to a US defense official.
When asked about the letters sent to the Pentagon, a Secret Service spokesman told CNN: The Secret Service can confirm receipt of a suspicious envelope that was sent to the President on October 1, 2018.
"The envelope was neither received in the White House, nor ever entered the White House," the spokesman continued.
A source familiar with the ongoing joint federal investigation said that the letters from the The White House and the Pentagon are linked to each other on the basis of preliminary investigations and the substance in question is a very raw castor-biscuit that the authorities would not technically name Ricinus is a highly toxic compound extracted from castor beans and used in terrorist attacks
can be used in powder, pellet, mist or acid form, when ingested it causes nausea, vomiting and internal bleeding of the stomach and intestine, followed by liver, spleen and kidney failure and death by collapse of the circulatory system. 1
The Post Office is located in a separate building on the Pentagon site, and the two positively tested mail pieces never entered the Pentagon building.
All mail received at the Pentagon's mail screening facility on Monday is currently quarantined and poses no threat to Pentagon personnel, according to Pentagon spokesman Col. Rob Manning.
"The Pentagon Force on Monday Protection Agency "A suspected substance was discovered in the demonstration of mail at the Pentagon's remote screening facility," Manning said in a statement.
"The envelopes were taken this morning by the FBI for further analysis," Manning added
The FBI issued a statement stating that it had taken possession of two suspicious envelopes at the Pentagon Mail facility and is carrying out further tests.
"On Tuesday, October 2, 2018, in Co-ordination with the Pentagon Force Protection Agency, FBI special agents took possession of two suspicious envelopes screened at the Pentagon Mail facility. These envelopes are currently undergoing further testing. Since this is still running, we will have no further comments.
Secret Service spokesman said The agency worked with law enforcement agencies to investigate the envelopes addressed to Trump and "seriously and comprehensively investigate all threats directed to an intelligence protection tea."
CNNs Josh Campbell, David Shortell, Zachary Cohen, and Betsy Klein reporting.