In a letter to Congress, the F.B.I. director, James B. Comey, said the emails had surfaced in an unrelated case, which law enforcement officials said was an F.B.I. investigation into illicit text messages from Mr. Weiner to a 15-year-old girl in North Carolina. Mr. Anthony Weiner, a former Democratic congressman from New York, is married to Huma Abedin, the top ( Hillary Clinton) aide. CBS New York video.