CHAPTER IV: OTHER FORMS OF COOPERATION
SECTION II: SPECIFIC FORMS OF COOPERATION
Art. 34 Principles for questioning
2 The person may refuse to make a statement if:
a. the person would thereby incriminate himself or herself or a person named in this regard in the Rules of Procedure and Evidence of the Court, or if the person would thereby confess guilt
Rights during investigation - self incrimination
Rights during investigation - remain silent
EDIT.