§ 2. Crimes
Section 4
2. For the purposes of this section:
(d) ‘enforced disappearance of persons’ means the 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.
Enforced disappearance - crimes against humanity
EDIT.