White powder letters reach Pelosi's office amid wave of suspicious congressional mailings

Letters containing white powder have reached more than three dozen congressional offices and election offices in at least 32 states ahead of the midterm elections.

• Pelosi's office received a suspicious letter Wednesday; her spokesperson said it matched mailings received by other congressional offices and that staff were safe.
• More than 100 letters thought to contain powder have been reported circulating, with preliminary tests detecting no hazardous substance so far.
• The FBI said it and the Postal Inspection Service are investigating suspicious mailings sent to congressional, secretary of state and election offices nationwide.
• Representative Adam Smith's office was evacuated after receiving a letter containing a powdery substance.