Former Mayer Brown chief information officer David Tresch was sentenced on Tuesday to 27 months in prison for his role in a $4.8 million billing and kickback scheme to defraud the firm.

Tresch, who in April 2013 admitted that he and Nicholas Demars, the president of a contract employees and technology services firm, ran the eight-year scheme, was also ordered by U.S. District Judge Edmond Chang in Chicago to pay $1.1 million in restitution to the firm.