A former Massachusetts state trooper was sentenced in federal court in Boston Tuesday, ordered to serve three months in prison for his role in a scheme to take bribes in exchange for giving passing scores on commercial driving tests.

Calvin Butner, of Halifax, was also sentenced to one year of supervised release, U.S. Attorney Leah B. Foley’s office said in a statement . He was one four members of the Massachusetts State Police who were charged last year in a 74-count indictment related to the alleged conspiracy. Former troopers Gary Cederquist, Joel Rogers, and Perry Mendes were also charged in the case.

Butner, 64, pleaded guilty in April to one count of conspiracy to falsify records, three counts of falsifying records and aiding and abetting, and five counts of making false stat

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