On paper they do require the court to do it, but when it's just a formality...
> Suspects can be detained for an "interview" in a daiyō kangoku for as many as seventy-two hours under the Code of Criminal Procedure. After this seventy-two-hour period, prosecutors can request a further ten days' detention of the suspect from a judge. These ten days are frequently used by the investigative authorities to gain confessions from the suspect. After the initial ten-day extension, the prosecutor can request a further ten days of detention from a judge, before the suspect must either be charged or released. Activists claim that requests for pre-trial detention after arrest are almost always granted by judges; in 1987, the rate of approval for all requests was 99.8%
I don't think Western courts approve pre-trial detention at this rate, though I wouldn't be surprised if 99.8% of search warrants are granted, for example.
> Suspects can be detained for an "interview" in a daiyō kangoku for as many as seventy-two hours under the Code of Criminal Procedure. After this seventy-two-hour period, prosecutors can request a further ten days' detention of the suspect from a judge. These ten days are frequently used by the investigative authorities to gain confessions from the suspect. After the initial ten-day extension, the prosecutor can request a further ten days of detention from a judge, before the suspect must either be charged or released. Activists claim that requests for pre-trial detention after arrest are almost always granted by judges; in 1987, the rate of approval for all requests was 99.8%
I don't think Western courts approve pre-trial detention at this rate, though I wouldn't be surprised if 99.8% of search warrants are granted, for example.