918.13  Tampering with or fabricating physical evidence.—

(1)  No person, knowing that a criminal trial or proceeding or an
investigation by a duly constituted prosecuting authority, law
enforcement agency, grand jury or legislative committee of this state is
pending or is about to be instituted, shall:

(a)  Alter, destroy, conceal, or remove any record, document, or
thing with the purpose to impair its verity or availability in such
proceeding or investigation; or

(b)  Make, present, or use any record, document, or thing, knowing it to be false.

(2)  Any person who violates any provision of this section shall
be guilty of a felony of the third degree, punishable as provided in s. 775.082, s. 775.083, or s. 775.084.