(a) A person commits the crime of tampering with a witness if, with purpose to induce a witness or a prospective witness in an official proceeding to disobey a subpoena or other legal process, or to absent himself or avoid subpoena or other legal process, or to withhold evidence, information or documents, or to testify falsely, he:

    (1)    Threatens or causes harm to any person or property; or

    (2)    Uses force, threats or deception; or

    (3)    Offers, confers or agrees to confer any benefit, direct or indirect, upon such witness.

    (b) Tampering with a witness is a class A misdemeanor.

(Code 1964, § 7.970)

     State law reference(s)--Similar provisions, RSMo. § 575.270.