CHAPTER Ⅱ Rights and Duties of the Citizen
Article 12 [Personal Liberty, Personal Integrity
(2) No citizens may be tortured or be compelled to testify against himself in criminal cases.
Rights during investigation - self incrimination
Rights during investigation - not to be subjected to any form of coercion, duress or threat, to torture or to any other form of cruel, inhuman or degrading treatment or punishment
EDIT.