TITLE III
EVIDENCE AND MEANS OF EVIDENCE
CHAPTER I
GENERAL PROVISIONS
Art. 68 - It is forbidden to use violence, threats or any other constraints, as well as promises or encouragement with the purpose of obtaining evidence.
Also, it is forbidden to force a person to commit or to continue committing an offence with the purpose of obtaining evidence.
Fair trial standards
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.