The couple was only found out when Krar tried to mail a package of counterfeit birth certificates to an anti-government militia member in New Jersey, but got the address wrong.

CNN: Growing threat of extreme right-wing violence

In 2003, federal agents discovered "nearly two pounds of a cyanide compound and other chemicals that could create enough poisonous gas to kill everyone inside a space as large as a big-chain bookstore or a small-town civic center" at the home of Judith Bruey and her husband, William Krar, according to an Associated Press report.

CNN: Growing threat of extreme right-wing violence