Stone has claimed that Credico, a former friend of his, was a conduit between him and WikiLeaks. Credico has repeatedly and publicly denied the allegations.
David Lugo, a filmmaker who knows both Credico and Stone, told the Journal that he testified before Mueller’s grand jury about a blog post Stone helped him write that spoke harshly about Credico.
Businessman Bill Samuels said he was also a witness and was asked about Credico’s response to messages from Stone that were allegedly threatening, according to the Journal.
Stone denies the allegations.