Kenneth Olsen was convicted of two counts of possession of a biological weapon and possession of "enough Ricin to kill 5,000 people." Prosecutors suspect that Olsen, who was having an affair, was plotting to murder his wife. He was sentenced to 165 months in prison.

William Krar and Judith Bruey were indicted for possession of sodium cyanide and bomb-making components. Authorities found weapons, explosives, ammunition, gas masks, knives and sodium cyanide in a locker rented by Krar. According to the Justice Department, it is not clear what Krar intended to do with these weapons, although Krar is said to be fiercely anti-American, with ties to white supremacist and anti-government militia groups. He was sentenced to 135 months in prison.

Casey Cutler of Arizona pled guilty to one count of attempting to produce the biological toxin ricin for use as a weapon. Cutler had attempted to produce ricin based on a recipe found on the Internet but used castor oil instead of castor beans, resulting in a harmless powder. Cutler, who had recently been assaulted, wore the powder around his neck in a vial intended to look like cocaine, as bait for would-be attackers.

Two Chinese Americans, Chao Tung Wu and Yi Zing Chen were indicted for conspiracy to import shoulder-fired anti-aircraft missiles from China "with the assistance of a corrupt customs broker." Wu and Chen were arrested in late August 2005, before the deal was completed. Wu pled guilty; Chen pled not guilty and will be tried.