§ 215.13 Tampering with a witness in the first degree.
A person is guilty of tampering with a witness in the first degree
when:
1. He intentionally causes serious physical injury to a person for the
purpose of obstructing, delaying, preventing or impeding the giving of
testimony in a criminal proceeding by such person or another person or
for the purpose of compelling such person or another person to swear
falsely; or
2. He intentionally causes serious physical injury to a person on
account of such person or another person having testified in a criminal
proceeding.
Tampering with a witness in the first degree is a class B felony.