Section 4 — Requisition for surrender

A requisition for the surrender of a fugitive criminal of a foreign State * * * may be made to the Central Government--

(a) by a diplomatic representative of the foreign State * * * at Delhi; or

(b) by the Government of that foreign State * * * communicating with the Central Government through its diplomatic representative in that State ***;

and if neither of these modes is convenient, the requisition shall be made in such other mode as is settled by arrangement made by the Government of the foreign State * * * with the Government of India.