Longtime U.S. diplomat under federal counterintelligence probe

(CNN) - FBI agents searched the home of veteran diplomat and Pakistan expert Ambassador Robin Raphel in October as part of a counterintelligence investigation, three U.S. government officials told CNN.

As part of the investigation, Raphel's State Department office was searched and sealed, two of the officials said. It's unclear whether she is the target of the investigation, or what agents were searching for. The officials said it is an ongoing investigation and no charges have been filed.

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