WASHINGTON (AP) — A federal probe into Facebook’s sharing of user data with Cambridge Analytica now involves the FBI, the Securities and Exchange Commission and the Justice Department.

According to the Washington Post, representatives from these agencies have joined the Federal Trade Commission in the inquiry, citing five unnamed people familiar with the matter. Those people spoke on condition of anonymity because the probes are not complete.

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The probe reportedly centers on why Facebook didn’t disclose in 2015 that Cambridge Analytica improperly accessed personal data of up to 87 million Facebook users. Investigators are examining actions and statements of the company and its executives, including CEO Mark Zuckerberg.

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Menlo Park-based Facebook confirms that it has received questions from these agencies and said it is cooperating with the probe.

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