Gotti was indicted on two occasions in his last two years as the Bergin "capo", with both cases coming to trial after his ascension to boss of the Gambinos. In September 1984, Gotti had an altercation with refrigerator mechanic Romual Piecyk, and was subsequently charged with assault and robbery. In 1985, he was indicted alongside Dellacroce and several Bergin crew members in a racketeering case by Assistant U.S. Attorney Diane Giacalone. The indictment revealed that Gotti's friend and codefendant Wilfred "Willie Boy" Johnson had been an FBI informant.