Règle correspondante
Practice Relating to Rule 99. Deprivation of Liberty
Section C. Prompt information on the reasons for deprivation of liberty
Japan’s Code of Criminal Procedure (1948), as amended to 2006, states:
A subpoena or detention warrant shall contain the name and residence of the accused, the crime, a summary of the charged facts, the place where the accused is to be brought or the prison where he/she is to be detained, the valid period and a statement that after expiry of the valid period the subpoena or detention warrant shall not be executed but shall be returned, the date of issue, and other matters prescribed in the Court Rules; and the presiding judge or the commissioned judge shall affix his/her name and seal to it. 
Japan, Code of Criminal Procedure, 1948, as amended to 2006, Article 64(1).