disinformation n. 1. Deliberately misleading information announced publicly or leaked by a government or especially by an intelligence agency in order to influence public opinion or the government in another nation: "He would be the unconscious channel for a piece of disinformation aimed at another country's intelligence service" (Ken Follett). 2. Dissemination of such misleading information.n. attributive. Often used to modify another noun: disinformation operations; disinformation experts.[Possibly translation of Russian dezinformatsiya.] American Heritage Dictionary
Thats called "tampering with evidence"
That's called knowingly submitting false information
That's called obfiscating the facts.
That's called obstruction of Justice
All of the above are criminally and civily liable offenses !