The High Court or the Judge thereof to whom an application is made under section 1 of this Act shall immediately enquire into the allegation of unlawful detention and may make an order requiring the person in whose custody the applicant (or the person on whose behalf the application is made) is detained,

(a) to produce the body of the person so detained before the High Court on a day specified in the order, and

(b) to submit a report in writing stating the grounds of the detention.