The Gamut

A classified Justice Department investigation has concluded that a former F.B.I. translator at the center of a growing controversy was dismissed in part because she accused the bureau of ineptitude, and it found that the F.B.I. did not aggressively investigate her claims of espionage against a co-worker.

The Justice Department's inspector general concluded that the allegations by the translator, Sibel Edmonds, "were at least a contributing factor in why the F.B.I. terminated her services," and the F.B.I. is considering disciplinary action against some employees as a result, Robert S. Mueller III, director of the bureau, said in a letter last week to lawmakers. A copy of the letter was obtained by The New York Times.

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The Edmonds case has proved to be a growing concern to the F.B.I. because it touches on three potential vulnerabilities for the bureau: its ability to translate sensitive counterterrorism material, its treatment of internal "whistle-blowers," and its classification of sensitive material that critics say could be embarrassing to the bureau.

The Justice Department has imposed an unusually broad veil of secrecy on the Edmonds case, declaring details of her case to be a matter of "state secrets." The department has blocked her from testifying in a lawsuit brought by families of Sept. 11 victims, it has retroactively classified briefings Congressional officials were given in 2002, and it has classified the inspector general's entire report on its investigation into her case. As a result, groups promoting government openness have accused the Justice Department of abusing the federal procedures in place for classifying sensitive material.