CHAPTER III
PROTECTION OF FUNDAMENTAL RIGHTS AND FREEDOMS OF THE INDIVIDUAL
Article 20
Provisions to secure protection of law
(4) No person shall be held to be guilty of a criminal offence on account of any act or omission that did not, at the time it took place, constitute such an offence, and no penalty shall be imposed for any criminal offence that is severer in degree or description than the maximum penalty that might have been imposed for that offence at the time when it was committed.
CHAPTER 91
PART II
POWER OF COURTS
5. (1) Any offence under any law for the time being in force, when any court is mentioned in that behalf in such law, shall be tried by such court unless removed to any other court for trial under any provisions of this Code. For the purposes of this subsection a provision in any law for an offence to be tried summarily shall be construed as a reference to the trial of such offence by a magistrate's court.
1. A person shall not be criminally responsible under this Statute unless the conduct in question constitutes, at the time it takes place, a crime within the jurisdiction of the Court.
2. The definition of a crime shall be strictly construed and shall not be extended by analogy. In case of ambiguity, the definition shall be interpreted in favour of the person being investigated, prosecuted or convicted.
3. This article shall not affect the characterization of any conduct as criminal under international law independently of this Statute.