In a letter to the Senate Judiciary Committee on Friday, FBI Director James Comey wrote that the agency is investigating additional emails that were discovered as part of a separate investigation.



"In connection with an unrelated case, the FBI has learned of the existence of emails that appear to be pertinent to the investigation … I agreed that the FBI should take appropriate investigative steps designed to allow investigators to review these emails to determine whether they contain classified information, as well as to assess their importance to our investigation," he wrote.