Section 620.70. Material witness order; compelling attendance of witness who fails to appear  


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  • If a witness at liberty on bail pursuant to a material  witness  order
      cannot  be  found or notified at the time his appearance as a witness is
      required, or if after notification he fails to appear in such action  or
      proceeding  as  required,  the court may issue a warrant, addressed to a
      police officer, directing such officer to take such witness into custody
      anywhere within the state and to bring him to the court forthwith.