US Attorney Preet Bharara has scheduled a news conference at noon today to discuss the case.
Joseph Percoco is the former executive deputy secretary to the governor.
The Democratic governor's office said in April that Bharara was examining possible undisclosed conflicts of interest and improper bidding related to Cuomo's efforts to attract high-tech jobs upstate.
The federal probe revealed a web of individuals and businesses tied to Cuomo that stand to make millions from the projects.
Messages left with Cuomo's office were not immediately returned. Percoco's lawyer and Kaloyeros weren't initially available for comment.
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