Article 1 Code of Crimes against International Law (CCAIL)
Part 2 Crimes against International Law
Chapter 1 Genocide and crimes against humanity
Section 7 Crimes against humanity
(1) Whoever, as part of a widespread or systematic attack directed against any civilian population,
9. severely deprives, in contravention of a general rule of international law, a person of his or her physical liberty,
shall be punished with imprisonment for not less than three years.
Severe deprivation of physical liberty - crimes against humanity
EDIT.