CHAPTER III — CRIMINAL OFFENCES
PART 11 — OFFENCES AGAINST THE ADMINISTRATION OF LAWFUL AUTHORITY
Division 1 — Corruption and the Abuse of Office
Sub-Division g — Other Offences Relating to the Aministration of Justice
Destroying evidence
189. A person commits a summary offence if he or she, knowing that any book, document or thing of any kind is or may be required in evidence in a judicial proceeding—
(a) wilfully removes or destroys it ; or
(b) renders it illegible or indecipherable or incapable of identification—
with the intent to prevent it from being used in evidence.
Offences against administration of justice
Corruptly influencing a witness, obstructing or interfering with the attendance or testimony of a witness, retaliating against a witness for giving testimony or destroying, tampering with or interfering with the collection of evidence
EDIT.