An investigation into Maricopa County Sheriff Joe Arpaio is serious and ongoing, according to U.S. Attorney General Eric Holder.
Holder said he expects the probe conducted by Justice Department's civil rights division and the Arizona U.S. attorney's office "will produce results." Holder made the remarks during a visit to Phoenix to attend a mortgage fraud task force meeting on Thursday.
Several Maricopa County employees -- including County Manager David Smith -- have been called before a federal grand jury that's examining abuse-of-power allegations against Arpaio and a second federal investigation that Arpaio has said focuses on his immigration enforcement.
Holder didn't reveal any details of the probe, citing the ongoing investigation.
A 5 Investigates report in October discovered that dozens of people complained the sheriff targeted them with investigations after they criticized him, and several people -- including Phoenix Mayor Phil Gordon -- confirmed they had spoken with the FBI about the subject.
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