Judicial Officer

person who works for a law court

A judge or justice is an official who presides over a court. The powers, functions, method of appointment, discipline, and training of judges vary widely across different jurisdictions.
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Any person or court authorized pursuant to section 3041 of this title, or the Federal Rules of Criminal Procedure, to detain or release a person before trial or sentencing or pending appeal in a court of the U.S. 18 U.S.C.

An officer of a court usually authorized to determine depositive matters. This can include judges, magistrates and such, but not usually clerks.