WASHINGTON (Reuters) - President Barack Obama will nominate Jim Comey to be the next FBI director on Friday, picking a former Justice Department official who has deep experience in the U.S. battle against terrorism, a White House official said on Thursday.


If confirmed by the Senate, Comey, a Republican, would replace FBI Director Robert Mueller, who has led the agency since just before the September 11, 2001, attacks. Mueller is expected to step down this fall.

(Reporting By Steve Holland; Editing by Mohammad Zargham)