Section 209. Investigations

The  board  of  supervisors  is empowered to
  conduct  an  investigation  into   any   subject   matter   within   its
  jurisdiction,  including  the conduct and performance of official duties
  of any officer or employee paid from county funds and the accounting for
  all money or property owned by or under the control of the  county.  The
  power  to  conduct investigations may be delegated to a committee of the
  board. The chairman of the board and any member of  such  committee  may
  issue  a  subpoena requiring a person to attend before the board or such
  committee and be examined in reference to any matter within the scope of
  the investigation, and in a proper case to produce all  books,  records,
  papers  and  documents  material  or  relevant  to  the investigation. A
  subpoena issued under this section  shall  be  regulated  by  the  civil
  practice law and rules. The chairman of the board and any member of such
  committee may administer the oath to any witness and adjournments may be
  taken from time to time.