People against whom there is no plausible reason to suspect that they have committed or attempted to commit an offence shall be heard by the investigators without being subjected to a measure of restraint.
However, if justified by the needs of the investigation, such persons may be held under restraint for the time strictly necessary for their hearing, which may not exceed four hours.
If, during the hearing of a person heard freely pursuant to the first paragraph of this article, it appears that there are plausible grounds for suspecting that he or she has committed or attempted to commit an offence, that person must be heard pursuant to Article 61-1 and the information provided for in 1° to 6° of the same article shall then be notified to him without delay, unless his placement in police custody is required pursuant to Article 62-2.
If, during the hearing of a person detained pursuant to the second paragraph of this article, it appears that there are reasonable grounds for suspecting that they have committed or attempted to commit a crime or an offence punishable by imprisonment, they may only be held under restraint at the disposal of the investigators in police custody. The person is then notified of his or her placement in police custody under the conditions set out in article 63-1.