(CNBC) Both the Federal Reserve and the US Treasury Department are examining the extent to which Bloomberg-terminal usage by top officials might have been tracked by Bloomberg journalists, CNBC has learned.

A Fed spokesperson told CNBC that the central bank is looking into the situation and has been in touch with Bloomberg to learn more. A source said the Treasury Department is taking similar action.

Meanwhile, CNBC has learned from a former Bloomberg employee that he accessed usage information of the company’s data terminals of Federal Reserve Chairman Ben Bernanke and former U.S. Treasury Secretary Tim Geithner.

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