N.Y. Penal Law § 215.17

§ 215.17 Intimidating a victim or witness in the first degree.\n A person is guilty of intimidating a victim or witness in the first\ndegree when, other than in the course of that criminal transaction or\nimmediate flight therefrom, he:\n 1. Intentionally causes serious physical injury to another person for\nthe purpose of obstructing, delaying, preventing or impeding the\ncommunication by such other person or another person of information\nrelating to a criminal transaction to any court, grand jury, prosecutor,\npolice officer or peace officer or for the purpose of compelling such\nother person or another person to swear falsely; or\n 2. Intentionally causes serious physical injury to another person on\naccount of such other person or another person having communicated\ninformation relating to a criminal transaction to any court, grand jury,\nprosecutor, police officer or peace officer.\n Intimidating a victim or witness in the first degree is a class B\nfelony.\n