Bioterrorism in Des Moines?

[IowaStatePhiPsi]

Just heard on the radio that the Des Moines Register's office building has been evacuated after a package with a strange substance was found in their mailroom. Part of downtown Des Moines blocked off, Des Moines Hazardous Materials unit, US Postal Investigators and FBI are at the scene, a few DSM Register employees being put through decontamination procedures.