D.C. Criminal Code § 602

EVIDENCE (1)Any person who upon any trial, proceeding, inquiry, or investigation, such being authorized or permitted by law, offers in evidence, as genuine or true, any document or record, knowing the same to have been forged or fraudulently altered, shall be guilty of tampering and falsifying evidence. (2)Any person who alters, destroys or removes any form of evidence that the subject knows to have been admitted into a trial, proceeding, inquiry, or investigation, such being authorized or permitted by law, in such a way that would inhibit persons involved in such process from utilizing such evidence in the aforementioned process, without their explicit consent, shall be guilty of destroying evidence. (3)These shall be Class B Offenses.