U.S. Magistrate Judge Timothy Rice denied bail for Joseph "Uncle Joe" Ligambi, noting Ligambi's criminal record and the seriousness of the charges. Rice also ordered another reputed mobster, Louis "Bent Finger Louie" Monacello, held without bail.
Ligambi and a dozen others are charged in an indictment unsealed this week. The alleged boss pleaded not guilty during an initial appearance Monday.
Ligambi was previously convicted in a gangland slaying but his conviction was later overturned and he was released in 1997.
Alleged underboss Joseph "Mousie" Massimino had been scheduled to appear but his bail hearing was postponed.