CHAPTER II
THE HUMAN BEING AND THE STATE
Article 20
No one may be arbitrarily detained or held arrested. No one may be deprived of his freedom otherwise than on the grounds and according to the procedures which have been established by law.
A person detained in flagrante delicto must, within 48 hours, be brought before a court for the purpose of deciding, in the presence of the detainee, on the validity of the detention. If the court does not adopt a decision to arrest the person, the detainee shall be released immediately.
Fair trial standards
Rights during investigation - arbitrary arrest or detention and deprivation of liberty
EDIT.