Chapter II
Crimes
Section I
Crime of genocide and crimes against humanity
Article 9
Crimes against humanity
Anyone who commits any of the following acts as part of a widespread or systematic attack directed against any civilian population:
(f) Torture, which means the infliction of severe pain or suffering, whether physical or mental, upon a person in the custody or under the control of the perpetrator;
shall be punished with a term of imprisonment of 12 to 25 years.
Torture - crimes against humanity
EDIT.