RENO, Nev. -- Federal prosecutors are continuing to try to build a criminal case against three officials for an irrigation district in northern Nevada accused of defrauding the U.S. government.

An evidentiary hearing is scheduled in U.S. District Court in Reno at 1:30 p.m. Wednesday on a number of motions related to subpoenas for evidence and the indictments of the three officials for the Truckee-Carson Irrigation District.

District project manager David Overvold, district lawyer Lyman McConnell and a district employee, John Baker, are accused of falsifying records documenting the delivery of water to area farmers and ranchers from 2000 to 2005.

They men have said they are not guilty of the charges. If convicted, they each could face more than 20 years in prison.