Former FBI Director James Comey challenges a federal criminal case tied to his April Instagram post using seashells spelling “86 47” (also described as “8647”). In a motion to dismiss filed Tuesday, Comey’s lawyers argue that law enforcement improperly surveilled him, including Secret Service tracking of his location while he traveled from North Carolina to Virginia soon after the post. They also contend that prosecutors relied on speculative interpretations of the numbers to justify charging Comey with allegedly threatening President Donald Trump. According to the motion as described by multiple outlets, the government sought support from sources including Salvatore “Sammy the Bull” Gravano, a former mafia boss, to argue that “86” could be linked to murder. The outlets report that Gravano cast doubt on that interpretation, saying that experienced organized-crime figures would not use such an obvious code, and referenced other commentary that prosecutors could not substantiate. The motion also claims that the investigation involved use of AI tools in searching for meaning behind the post. The DOJ’s theory, per the filings, is that the post was a threat to the president’s life.