CRIMINAL CODE
PART I - General Provisions
TITLE XV - Perjury and Obstruction of Public Justice
1. Perjury and Other Crimes Relating to Evidence and to Judicial Proceedings
262. Every person who in any manner wilfully causes any person to disobey any summons, subpoena or order, for his attendance as a witness in any proceeding, or for the production by him of any written or other evidence in any judicial proceeding, is guilty of a misdemeanour.
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
National penalties - offences against the administration of justice
National penalties - maximum penalty
EDIT.