Congressional offices receive mailed threats (AP)

[unable to retrieve full-text content]AP - Some congressional offices outside Washington and media organizations have received threatening letters containing a suspicious powdery substance that was tested and proved to be harmless, the FBI and the Senate's top law enforcement officer said Wednesday.

Source: http://us.rd.yahoo.com/dailynews/rss/uscongress/*http%3A//news.yahoo.com/s/ap/20120222/ap_on_go_co/us_congress_threats

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