Nulla poena sine lege

Chad

Chad - Constitution (EN) 2018

Chapter 1 Of the Freedoms and of the Fundamental Rights

Article 23

No one may be detained in a penal establishment unless it constitutes an offense of a criminal law in force.

Rome Statute

Article 23 Nulla poena sine lege

A person convicted by the Court may be punished only in accordance with this Statute.