MINEOLA, N.Y. (CBSNewYork) — Reports of a political bombshell are swirling in Nassau County that Nassau County Executive Ed Mangano could soon face a federal indictment in a corruption probe.

CBS2’s Carolyn Gusoff reports sources told Newsday Mangano could go before a federal judge as early as Thursday.

Many in the political arena across Long Island are abuzz with word that federal prosecutors will announce an indictment against the county executive and possibly another high-profile elected official in a corruption probe.

At issue appears to be Mangano’s relationship with millionaire restaurateur Ha-rendra Singh. Questions have been raised for months about whether the indicted restaurant owner lavished Mangano with free meals and vacations in exchange for political favors.

Sources said an arrest appears imminent, but as of late Wednesday, Mangano’s attorney has said his client has not been ordered to surrender.

A spokesman for Mangano has called the reports of a pending arrest “nonsense” and “a rumor mill.”

“County Executive Mangano has the highest integrity, has done nothing wrong, has not been contacted and the accusations are preposterous,” said spokesman Brian Nevin.

Sources have told CBS2 they have been expecting this kind of federal bombshell for months.