SPOKANE — U.S. post office workers located the fifth letter being sought by federal investigators in connection with four others containing the active toxin ricin, the FBI said. It has been addressed to the CIA but sent to the wrong address, and the letter was returned to Spokane.
The envelope was found unopened and not leaking any materials, the FBI said Saturday. There are no reports of U.S. Postal Service employee injuries or illness.
The appearance of the envelope is similar to the previous four letters, with a postmark of May 13, 2013, from Spokane, and the handwritten address penned in red ink, the FBI said. The unopened letter will undergo further testing.
The FBI and USPIS are not aware of any injuries or illnesses caused by any of the five letters.
Matthew Ryan Buquet of Spokane faces a one-count grand jury indictment for mailing threatening communications, in relation to the letter sent to a federal court judge in Spokane that contained ricin, the FBI said.
The investigation is ongoing, the FBI said.