In a related case, David Adelhardt, 47, the chief executive of Adelhardt Construction Corporation, pleaded guilty on Tuesday to falsifying purchase orders to conceal his firm’s construction work at Mr. Cassisi’s home and its payments for his hunting trips in upstate New York.

In court, Mr. Adelhardt, who will be sentenced to two days per week in jail for one year under his plea deal, admitted that those favors had been intended to ensure that his company would continue to be hired to do work for Citibank.

The president of Adco Electrical Corporation, Edward J. Welsh, 71, has pleaded guilty to a misdemeanor for having signed off on a $21,500 Alaskan hunting trip for Mr. Cassisi a year ago. His lawyer, Alex Spiro, said Mr. Welsh “took the misdemeanor to save his great company.”

A second Adco official, Mark File, 62, was arrested on Tuesday on charges he made arrangements to pay Mr. Cassisi bribes and later solicited bribes from other contractors on his behalf. Mr. File is also accused of colluding with other contractors to rig bids on Citibank projects.

He pleaded not guilty before Justice Hayes and was released on bail. “Cassisi was nothing more than a shakedown artist,” Mr. File’s lawyer, J. Bruce Maffeo, said. “Mark File, however, is just a victim and committed no crime.”

Mr. Cassisi, as a youngster, had a brief career as an actor, appearing in the sitcom “Barney Miller” and its spinoff “Fish,” as well as playing Fat Sam in the 1976 movie “Bugsy Malone.”

When investigators and the State Police executed search warrants at his home, they discovered dozens of big-game trophies on the walls, law enforcement officials said. There were 27 hunting rifles and 16 pistols in the house, along with $15,000 in cash, prosecutors said.