CIA Director David Petraeus resigned Friday after admitting an affair . During the investigation , other communications surfaced between Petraeus and Broadwell , a married mother of two , according to the official . His biographer was investigated over e-mails to another woman , a U.S. official says . The FBI is investigating the matter as part of its probe into whether classified information may have been mishandled in connection with the case involving Petraeus, who stepped down last week amid allegations that he had shared She wrote a book about Petraeus ' leadership qualities .
CIA Director David Petraeus resigned Friday after admitting an affair . His biographer was investigated over e-mails to another woman , a U.S. official says . The FBI is investigating the matter as part of its probe into whether classified information may have been mishandled in connection with the case involving Petraeus, who stepped down last week amid allegations that he had shared She wrote a book about Petraeus ' leadership qualities .