An email sent to media outlets by someone claiming to be "the real culprit" in the cyberriddler case is likely a prank, sources say.
"Yusuke Katayama denied sending the email, and I think it was a prank," Hiroshi Sato, the lawyer representing the suspect in the high-profile case, said Monday.
Katayama himself earlier allegedly attempted to deceive investigators and his own attorneys by sending an email from his smartphone using a delay timer. The message said "the real culprit" was at large while Katayama was in the courtroom.