When can a person be held for a capital or infamous crime without an indictment from a grand jury?

The answer is - "The Amendment requires that felonies be tried only upon indictment by a grand jury. In most states, prosecutors have up to 72 hours to bring charges. But certain states, including California, give prosecutors only 48 hours before they must file charges or release the suspect. That time limit applies to how long you can be held without charge, but it doesn't necessarily affect the prosecutor's ability to bring charges later on."