That depends on where you are located. Most 'crimes' in every state have gradations, meaning the police and the District Attorney have a potential range of offenses and potential penalties. If you are referring to Maryland, then this would be considered potential 'obstruction of justice' and would be a misdemeanor.
Here is the statute below:
§ 9-306. Obstruction of justice.
(a) Prohibited.- A person may not, by threat, force, or corrupt means, obstruct, impede, or try to obstruct or impede the administration of justice in a court of the State.
(b) Penalty.- A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 5 years or a fine not exceeding $10,000 or both.
[An. Code 1957, art. 27, § 26; 2002, ch. 26, § 2.]
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