The Constitution prohibits arbitrary arrest and detention, and the Government generally observes these prohibitions. The law provides for judicial determination of the legality of detention. Persons may not be detained without charge, and prosecuting authorities must be prepared to demonstrate that probable cause exists to detain the accused. Under the law, a suspect may be held in detention at either a regular detention facility or "substitute" (police) detention facility for up to 72 hours. A judge must interview suspects prior to detention. A judge may extend preindictment custody by up to two consecutive 10-day periods based on a prosecutor's application. These extensions were sought and granted routinely. Under extraordinary circumstances, prosecutors may seek an additional 5-day extension, bringing the maximum period of preindictment custody to 28 days.