On Monday March 16, 2015 “An envelope containing an unknown milky substance, in a container wrapped in a plastic bag was received at the White House Mail Screening Facility, tested positive for cyanide,” the alert read. According to the Secret Service spokesman Bryan Leary in a statement. “The sample was transported to another facility to confirm the results.”
Leary said because there is an “ongoing investigation, the Secret Service will have no additional comment.” There were no injuries or exposure concerns for the person at the mail sorting facility who opened the letter, said a law enforcement official. The envelope was initially reported by the Intercept, which received an internal law enforcement document that alerted staff to the incident.
The alert identified the man listed as the return address on the envelope as having a long history with the Secret Service, dating back to 1995. That history includes an incident in which the man sent a package covered in feces and urine.
