Federal investigation into Sheriff Joe

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MCSO under federal investigation

PHOENIX (AP) -- Federal authorities have told a high-profile Arizona sheriff that they will investigate his department over allegations of discriminatory practices and unconstitutional searches and seizures.

The U.S. Justice Department says in a letter delivered Tuesday to Maricopa County Sheriff Joe Arpaio that the investigation will focus on alleged patterns of discrimination based on a person's national origin.

Arpaio tells The Associated Press that he will cooperate with the Justice Department.

Arpaio has gained national attention for his efforts to arrest illegal immigrants in the Phoenix area.

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