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.
