Under Article 91 of the Criminal Procedure Code the police may hold a suspect for 48 hours without a court order. Within that window an investigator must bring the person before a judge if they want to keep them in custody. The judge may extend the hearing by up to 72 hours at the request of either side, but the initial clock is 48 hours.
This is not a formality. The custody hearing sets the frame for everything that follows: whether your relative spends the investigation in a pre-trial detention centre — the SIZO — or at home under restrictions. A person in a SIZO is harder to defend. Access is limited, documents move slowly, and the pressure to cooperate is constant.
Article 49 of the Criminal Procedure Code gives the suspect the right to a defence lawyer from the moment of actual detention — not from the moment of formal charge. In practice this right is only real if someone exercises it immediately. A state-appointed lawyer will be provided, but they are assigned by the same authority that is investigating, they usually meet the client for the first time minutes before the interview, and they carry a large caseload.