NRS 199.230: Preventing or dissuading person from testifying or producing evidence.

A person who, by persuasion, force, threat, intimidation, deception or otherwise, and with the intent to obstruct the course of justice, prevents or attempts to prevent another person from appearing before any court, or person authorized to subpoena witnesses, as a witness in any action, investigation or other official proceeding, or causes or induces another person to be absent from such a proceeding or evade the process which requires the person to appear as a witness to testify or produce a record, document or other object, shall be punished:

1. Where physical force or the immediate threat of physical force is used, for a category D felony as provided in NRS 193.130.

2. Where no physical force or immediate threat of physical force is used, for a gross misdemeanor.