N.Y. Penal Law § 215.13 : Offenses Against Public Administration — Penal — Other Offenses Relating To Judicial And Other Proceedings — Tampering with a witness in the first degree Date: 10 Jun 2016 TEXT PDF Current through 2016 New York Laws, Chapters 1 to 237 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. N.Y. Penal Law § 215.13