WASHINGTON _ The FBI said Friday it is reviewing newly discovered emails related to Hillary Clinton's use of a private email server to determine whether classified materials were properly handled.
FBI Director James Comey wrote in a letter to congressional leaders that agents had recently "learned of the existence of emails that appear to be pertinent to the Clinton investigation" in an unrelated investigation.
The investigation, which comes after the Justice Department in July closed its previous probe into Clinton's handling of classified materials without filing criminal charges, is certain to become an issue in the final two weeks of the presidential campaign.
"In connection with an unrelated case, the FBI has learned of the existence of emails that appear to be pertinent to the investigation," Comey wrote. "I am writing to inform you that the investigative team briefed me on this yesterday, and 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."
Clinton's use of a private email server while serving as secretary of state has continued to dog her campaign. Comey said her actions did not merit criminal prosecution, but were "extremely careless."
