Over three dozen Congress offices get white powder envelopes

What BBN said about it

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   Hank Ledger · Lead AnchorThis just in: more than three dozen members of Congress have had their offices targeted with envelopes containing white powder, less than three weeks before the third of November midterms, The Guardian reports.

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   Hank Ledger · Lead AnchorFederal agents are trying to identify who is behind it.

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   Vera Bullock · Co-AnchorHere's what it means for ordinary people, and this is analysis. The FBI, the Postal Inspection Service and Capitol Police are all investigating.

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   Vera Bullock · Co-AnchorIn the one Chicago case, the powder was baking powder, and a New York emergency unit declared the Bronx sample non-hazardous.

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   Dale Bearman · Chief Skeptic & ContributorStill, staff had to call 911 and clear offices.

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   Dale Bearman · Chief Skeptic & ContributorLaw enforcement sources told ABC News more than one hundred possible letters are in the mail system.

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   Hank Ledger · Lead AnchorWe will bring you updates as the investigation moves.