law: 97. Interim custody until execution of sentence of death.-
  A person sentenced to death may be detained in Coast Guard custody or may be removed to a civil prison to be kept in custody until further orders are received from the Central Government, the Director-General or the convening authority of the Coast Guard Court by which he was sentenced to death or other prescribed officer, and the order of the Central Government, the Director-General or the convening authority or such officer shall be sufficient warrant for detaining the person in custody.