Japanese police have the right to detain suspects for a long period.
The initial failure to detain criminal suspects often leads to the collapse of the entire case.
Human rights groups report that the police often detains suspects longer than 10 hours.
It also has the authority to detain suspects, including well-known figures, and frequently does so.
They are effective in tracking and detaining suspects until police arrive.
The force, set up to assist the police, has been given new powers to detain suspects for a period of 30 minutes.
The law allows the police to detain suspects for up to 23 days without an indictment.
Prior to this act, the period which the police could detain terrorist suspects without bringing charges was 14 days.
Under British terrorism laws, police can detain suspects for up to 28 days without bringing formal charges.
Local authorities started to detain suspects in the case.
