Following James Comey's indictment in April, prosecutors sought the aid of gangster Sammy "The Bull" Gravano to build their case, Comey's lawyers claim in a court filing.

The FBI interviewed former mobster "Sammy the Bull” Gravano while probing whether Comey’s “86 47” post threatened President Donald Trump.

Following James Comey's indictment in April, prosecutors sought the aid of gangster Sammy "The Bull" Gravano to build their case, Comey's lawyers claim in a court filing.