Federal prosecutors filed a superseding indictment Friday against Lake County Sheriff John Buncich. The Northwest Indiana Times reports the additional wire fraud counts allege Buncich made incriminating financial wire transfers in April and October of 2014.

Buncich and others were named in an original indictment last November alleging an illegal towing scheme in which the sheriff accepted bribes. Buncich has pleaded not guilty to wire fraud and bribery charges. He’s currently scheduled to go to trial Aug. 7.

Buncich’s lawyer, Bryan Truitt, says the superseding indictment came “as a complete surprise.” He says Buncich “remains absolutely adamant that he’s done nothing wrong, that he’s completely innocent.”