PITTSBURGH - A federal jury is expected to begin deliberations today in the trial of a Masury man accused of taking part in a $2 million fraud scheme against a Sharon-based healthcare network.

Closing arguments are scheduled for this morning in the case of John O'Brien. Prosecutors say O'Brien and four others defrauded the Sharon-based Primary Health Network through a company called TopCoat. The government alleges the company sent bills for construction work that was never finished.

O'Brien is the only person charged in the investigation who did not plead guilty. He faces charges of conspiracy to commit wire fraud and three counts of wire fraud.

During the trial, jurors heard from Jack Laeng, a former co-defendant who previously admitted to his role in the scheme and agreed to testify for the government. An expert in construction bidding also testified about how the network was billed.

O'Brien took the witness stand on Friday to testify in his own defense. U.S. District Judge J. Nicholas Ranjan told jurors that if O'Brien honestly believed the bills sent by TopCoat were accurate, it could serve as a legal defense.

After the prosecution and defense finish their final remarks today, the jury will move to a private room to discuss the evidence.