(a) If any person shall by threats, menaces or in any other manner intimidate or attempt to intimidate any person who is summoned or acting as a witness in any of the courts of this State, or prevent or deter, or attempt to prevent or deter any person summoned or acting as such witness from attendance upon such court, the person shall be guilty of a Class G felony.
(b) A defendant in a criminal proceeding who threatens a witness in the defendant's case with the assertion or denial of parental rights shall be in violation of this section.