In
the federal system, accused persons are usually arrested after a grand
jury formally charges them with a crime. ([ ], a judge may
issue an arrest warrant before indictment upon the filing of a complaint
setting forth sufficient evidence to establish probable cause.)
Generally, the AUSA will apply to the court for the issuance of a
warrant of arrest for the person named in the indictment.
Depending on a number of factors, the defendant may, after arrest, be
released on bail (provisional liberty or conditional release) pending
trial or may remain in prison. These factors include the seriousness of
the crime, the criminal history of the accused, and the likelihood that
he or she will become a fugitive. A judge determines whether a
defendant is to remain in prison or is to be released, and, if released,
on what conditions. These conditions may include a requirement that the
defendant, or someone acting on the defendants behalf, pledge money or
other property that will be forfeited if the defendant fails to appear
for trial.
Soon
after the defendant is arrested, he or she will be brought before a
judge. The judge will inform the defendant of the charges against him
or her and ask whether the defendant pleads guilty or not guilty to the
charges. This proceeding is called the arraignment.
source quoted from here
source quoted from here