How long after arrest do I have to wait to find out what the charges are?
For suspects who are in custody, speedy trial laws typically require prosecutors to file charges, if at all, within 72 hours of arrest. Some jurisdictions require prosecutors to charge a suspect even sooner.
For example, California requires that charges be filed within 48 hours. (Cal. Penal Code § 825.) However, prosecutors’ initial charging decisions are subject to change. For example, a prosecutor may not make a final decision on charges until after a preliminary hearing, which may take place more than a month after arrest.
by: Sara J. Berman