Head note: Extension of custody u/s 167 Cr.P.C: Since accused has the right to oppose the prayer for the extension of the remand, it is necessary to produce the accused physically or through virtual – General principles governing default bail – The effect of the failure of the respondents to produce the appellants before the special Court at the time of consideration of the Extension application – Presence of accused is necessary to extend the custody – Failure to produce the accused for extension of time for investigation and custody is in violation of Article 21.