 Dean Zimmermann was convicted August 10, 2006 in federal court of accepting bribes in connection with his official duties.He was found guilty on three counts of accepting cash from a local real estate developer who had business before the City Council of Minneapolis.In December 2006, Zimmermann was sentenced to 30 months in prison for his felony convictions and served his sentence in the minimum security wing of the Federal Correctional Institution Englewood in Littleton, Colorado.