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:
(i) Enforced disappearance of persons, which means arrest, detention or abduction of persons by, or with the authorisation, support or acquiescence of, a State or a political organisation, followed by a refusal to acknowledge that deprivation of freedom or to give information on the fate or whereabouts of those persons, with the intention of removing them from the protection of the law for a prolonged period of time;
shall be punished with a term of imprisonment of 12 to 25 years.
Enforced disappearance - crimes against humanity
EDIT.