A Huntington man pled guilty Thursday to participating in a racketeering conspiracy, by admitting his role as an acting captain for the infamous Gambino organized-crime family.

John Ambrosio, 75, was the last of seven associates of La Cosa Nostra, as the crime family is also called, to plead guilty May 31 in United States District Court for the Eastern District of New York to acts including loansharking and running an illegal gambling business, according to prosecutors.

Ambrosio, known as “Johnny Boy,” and his six co-conspirators — including Anthony Rodolico, 46, of Huntington — were arrested by federal law enforcement officials Dec. 12, 2017. Earlier that day, federal officers who executed search warrants at various locations, including a Nassau County storage facility, found and recovered gambling and loansharking records, electronic gaming machines, narcotics and related paraphernalia and numerous firearms, including an AR-15, a .38 caliber revolver and a sawed-off shotgun, according to the U.S. attorney’s office. Law enforcement officials also found letters addressed to Ambrosio from the Bonanno family boss Michael “The Nose” Mancuso and former Gambino family boss John Gotti.

Prosecutors said they believe Ambrosio and his associates engaged in a racketeering conspiracy from January 2014 to December 2017. In entering his guilty plea, Ambrosio admitted to participating in the Gambino family’s activities by extorting a loan from one victim and supervising a gambling business that involved poker games, electronic gaming machines and sports betting, according to the U.S. attorney’s office. Under the terms of his plea deal, he will forfeit $100,000, including $66,116 in cash that was seized from his Huntington home at the time of his arrest.

When Ambrosio and Rodolico are sentenced, they each face a maximum sentence of 20 years in jail. The federal case is being handled by Assistant U.S. Attorney Artie McConnell.