Three letters containing white powder were mailed to Inland Northwest federal offices Monday. One letter was mailed to the FBI Office in Spokane at the Rockpointe Building, another was received at the U.S. Attorney's Office in Coeur d'Alene, and a third was found at the FBI Office in Downtown Coeur d'Alene. Throughout the Northwest, a total of 7 letters have been located so far. The FBI confirms letters were mailed to the Seattle Federal Courthouse, Bellevue IRS building, Boise U.S. Attorney's Office, and an office in Pocatello/John Langeler, KREM2. More here.