MINNEAPOLIS (AP) - A federal judge has sentenced a woman to 5 1/2 years in prison for mailing letters threatening to bomb seven post offices in the Twin Cities.

U.S. District Judge Susan Nelson on Thursday sentenced 43-year-old Christina Anne Reineke on one count of mailing threatening communications.

Reineke pleaded guilty in November. In her plea agreement, she admitted sending the letters.

In 2010, Reineke was sentenced to 4 1/2 years in prison for threatening to bomb post offices in southern Minnesota.

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