A letter addressed to President Donald Trump that was intercepted before it reached the White House tested positive for the deadly poison ricin earlier this week, law enforcement officials said.
The Federal Bureau of Investigations said Saturday afternoon they are investigating “a suspicious letter received at a U.S. government mail facility” alongside its partners at the U.S. Secret Service and the U.S. Postal Inspection Service.
Law enforcement officials said a letter was detected at an off-site facility that screens mail addressed to the White House.
“At this time, there is no known threat to public safety,” the FBI said in a statement.
One official said the letter tested positive to ricin in both a field test and a subsequent laboratory test.
A second official said the FBI, Secret Service and the Postal Inspection Service are trying to determine where the letter came from. It’s unclear when the letter was intercepted.
Ricin is highly toxic that could cause nausea, vomiting, and internal bleeding of the stomach and intestines. Depending on the severity of the exposure, it can also cause failure of the liver, spleen and kidneys, and death by the collapse of the circulatory system.
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