Suspicious Letter Addressed to Trump Under Investigation The Secret Service said in a statement Tuesday that it intercepted a "suspicious envelope" addressed to the president. Two other packages suspected of containing the poison Ricin were addressed to top Pentagon officials. Secret Service, via statement Earlier Tuesday, two people were hospitalized in Houston after a "white powdery substance" was found Sen. Ted Cruz's spokeswoman, Catherine Frazier, said that the package was opened in the lobby, Law enforcement officials said all of the packages, including the two sent to the Pentagon,