Congressional members and Stephen Colbert, Jon Stewart receive threatening letters
Three members of Congress have received threatening mail containing a suspicious powder later found to be harmless and law enforcement officials on Wednesday warned that more may be coming.
Another U.S. law enforcement official said letters sent to television personalities Jon Stewart and Stephen Colbert threatened biological attacks on U.S. senators.
Other letters to a number of news organizations and postmarked Oregon warned that 100 letters had been sent to the Washington or home-state offices of U.S. senators and that 10 of those contained a deadly pathogen, a law enforcement source said.
Read more of this story filed by Richard Cowan, Thomas Ferraro, Michelle Nichols and Mark Hosenball
