In return to a rule nisi issued by this Court or the High Court in a habeas corpus petition, the proper person to file the same is the District Magistrate who had passed the impugned order of detention and he must explain his subjective satisfaction and the grounds therefore; and if for some good reason the District Magistrate is not available, the affidavit must be sworn by some responsible officer like the Secretary or the Deputy Secretary to the Government in the Home Department who personally dealt with or processed the case in the Secretariat or submitted it to the Minister or other Officer duly authorised under the Rules of Business framed by the Governor under article 166 of the Constitution to pass orders on behalf of the Govern 675 ment in such matters: Niranjan Singh vs State of Madhya Pradesh, ; ; Habibullah Khan vs State of West Bengal, ; Jagdish Prasad vs State of Bihar & Anr., ; and Mohd. Alam vs State of West Bengal, ; In the present case, in answer to the notice issued by this Court under article 136, the affidavit in reply has been filed by Shri S.V. Joshi, District Magistrate, Beed who passed the impugned order of detention.