Such warnings could complicate any case the Justice Department might wish to bring, the sources said. A Justice Department spokesperson declined to comment. The Justice Department investigation potentially represents a more serious level of scrutiny because of the possibility of criminal charges against the company or individual executives, the people familiar with the inquiry said. As part of the latest probe, Justice Department prosecutors in Washington and San Francisco are examining whether Tesla misled consumers, investors and regulators by making unsupported claims about its driver assistance technology's capabilities, the sources said. The Justice Department’s Autopilot probe is far from recommending any action partly because it is competing with two other DOJ investigations involving Tesla, one of the sources said.

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