Sheriff's office challenges subpoena for financial documents

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PHOENIX -- The Maricopa County Sheriff's Office (MCSO) is again challenging the authority of the Maricopa County Board of Supervisors. 

Last month the board subpoenaed MCSO financial and administrative documents, including credit card transactions, work assignments, and a list of all detainees who have been extradited by the Sheriff's office. 

Attorneys for the Sheriff's office have refused to comply with the subpoena calling it too broad.  MCSO attorneys are questioning the board's need for five years worth of data to determine next years budget.