The tapes also created a rift between Gotti and Gravano, where the Gambino boss described his newly appointed underboss as too greedy and attempted to frame Gravano as the main force behind the murders of DiBernardo, Milito and Dibono. Gotti's attempt at reconciliation failed, leaving Gravano disillusioned with the mob and doubtful on his chances of winning his case without Shargel, his former attorney. Gravano ultimately opted to turn state's evidence, formally agreeing to testify on November 13, 1991. He was the highest-ranking member of a New York crime family to turn informer.