As a person who is provisionally charged in a criminal case, you have a number of rights about which the police will inform you. Here you can read about your rights
You can also read about when and how long the police can detain you.
In some situations, the police may need to extend your detention beyond the 24-hour time limit stipulated for an arrest. In that case, a judge will have to decide in a preliminary statutory hearing whether you can be detained for an extended period.