Members of the Joint Federal Haz-Mat Team, FBI and local law enforcement gather in front of the Osmun Apartments in Spokane, Wash., to execute a search warrant in connection with ricin-laced letters intercepted at a post office in the city's downtown earlier in the week. (AP Photo/The Spokesman-Review, Colin Mulvany)

Photo by: COLIN MULVANY

Members of the Joint Federal Haz-Mat Team, FBI and local law enforcement gather in front of the Osmun Apartments in Spokane, Wash., to execute a search warrant in connection with ricin-laced letters intercepted at a post office in the city's downtown earlier in the week. (AP Photo/The Spokesman-Review, Colin Mulvany)