Section 215.17. Intimidating a victim or witness in the first degree

A  person  is  guilty of intimidating a victim or witness in the first
  degree when, other than in the course of that  criminal  transaction  or
  immediate flight therefrom, he:
    1.  Intentionally causes serious physical injury to another person for
  the  purpose  of  obstructing,  delaying,  preventing  or  impeding  the
  communication  by  such  other  person  or another person of information
  relating to a criminal transaction to any court, grand jury, prosecutor,
  police officer or peace officer or for the purpose  of  compelling  such
  other person or another person to swear falsely; or
    2.  Intentionally  causes serious physical injury to another person on
  account of such other  person  or  another  person  having  communicated
  information relating to a criminal transaction to any court, grand jury,
  prosecutor, police officer or peace officer.
    Intimidating  a  victim  or  witness  in the first degree is a class B
  felony.