Summarize the following court judgment. it Petition No. 319 of 1974. Petition under Article 32 of the Constitution. Anil Kumar Gupta	 for the petitioner. P. Chatteriee and G. section Chatterjee	 for the respondents. The Judgment of the Court was delivered by BHAGWATI	 J. The petitioner challenges his detention under an order dated 10th September	 1973 made by the District Magistrate	 594 Burdwan under section 3(2)(i) of the . There were several grounds urged before us for challenging the validity of the order of detention but it is not necessary to refer to them since we find that there is one ground which is sufficient to dispose of the petition. To appreciate this ground it is necessary to notice a few facts. The order of detention was made on 10th September	 1973 and it was based on the subjective satisfaction of the District Magistrate that it was necessary to detain the petitioner with a view to preventing him from acting in a manner prejudicial to the maintenance of supplies and services essential to the community. This subjective satisfaction	 according to the grounds of detention furnished to the petitioner	 was founded on a solitary incident of theft of aluminums wire alleged to have been committed by the petitioner on 14th April	 1973. It appears that in respect of this incident a criminal case was filed inter alia against the petitioner in the Court of Sub Divisional Judicial Magistrate	 Asansol	 but	 as the affidavit in reply filed by the District Magistrate shows	 the witnesses were unwilling to depose against the petitioner in open Court on account of fear of danger to their life and the prosecution was 	 therefore	 constrained to drop th criminal case and the petitioner was discharged. However	 the date when the petitioner was discharged was not set out in the affidavit in reply. The petitioner was thereafter detained on 23rd November	 1973 pursuant to the order of detention. There was thus a time lag of about two and a half months between the date of the order of detention and	 the date when the petitioner was actually detained. The petitioner contended that since	 the District Magistrate did not state in his affidavit in reply as to when the petitioner was discharged	 it must be presumed that the petitioner was discharged on or about 10th September	 1973 and was available for being detained under the order of detention and yet he was not arrested for a period of two and a half months until 23rd November	 1973 and that shows that there was no real necessity to detain the petitioner with a view to preventing him from acting in a prejudicial manner and the subjective satisfaction of the District Magistrate founding the order of detention was not genuine. There is great force	 in this contention of the petitioner and it must result in invalidation of the order of detention. It is obvious from the facts set out in the affidavit in reply that the	 petitioner was arrested in connection with the criminal case arising out of the incident dated 14th April	 1973 set out in the grounds of detention. The criminal case was ultimately dropped as the witnesses were not willing to come forward to give evidence for fear of danger to their life and the petitioner was discharged. The date of discharge of the petitioner was	 however not set out in the affidavit in reply. We asked the learned counsel appearing on behalf of the respondent as to whether.there was any record with him from whick he could tell us as to ' What was the date on which the petitioner was discharged but he stated that the only record which he had was that 595 relating to the order of detention and the record relating to the criminal case had not been sent to him. We were told that even the history sheet of the petitioner	 which was before the District Magistrate when he made the order of detention	 did not give the date when the criminal prosecution was dropped that the petitioner was discharged. It did not even make any reference to the criminal case. This is rather unfortunate. He should have thought that the fact that a criminal case is pending against the person who is sought to be proceeded against by way of preventive detention is a very material circumstance which ought to be placed before the District Magistrate. That circumstance might quite possibly have an impact on his decision whether or not to make an order of detention. It is not altogether unlikely that the District Magistrate may in a given case take the view that since a criminal case is pending against the person sought to be detained	 no order of detention should be made for the present	 but the criminal case should be allowed to run its full course and only if it fails to result in conviction then preventive detention should be resorted to. It would be most unfair to the person sought to be detained not to disclose the pendency of a criminal case against him to the District Magistrate. But that is a different question altogether and it need not detain us. The fact remains that there was no record with the learned counsel appearing on behalf of the respondent from which he could give us the date when the petitioner was discharged. In view of this failure on the part of the respondent to supply information to the Court as to then the petitioner was discharged	 we must proceed on the assumption that he must have been discharged on or about 10th September	 1973. The order of detention must have been made by the District Magistrate in anticipation of the discharge of the petitioner and the discharge of the petitioner can	 therefore	 be presumed to have taken place at or about the time when the order of detention was made	 that is	 10th September	 1973. But if that be so	 the conclusion is inescap able that though the petitioner was available for detention since about 10th September	 1973	 he was not detained for a period of about two and a half months upto 23rd November	 1973. There was delay of about two and a half months in detaining the petitioner pursuant to the order of detention and this delay	 unless satisfactorily ex plained	 would throw considerable doubt on the genuineness of the subjective satisfaction of the District Magistrate recited in the order of detention. It would be reasonable to assume that if the District Magistrate was really and genuinely satisfied after proper application of mind to the materials before him that it was necessary to detain the petitioner with a view to preventing him from acting in a prejudicial manner	 he would have acted with greater promptitude in securing the arrest of the petitioner immediately after the invoking of the order of detention	 and the petitioner would not have been allowed to remain at large for such a long period of time to carry on his nefarious activities. of course when we say this we must not be understood to mean that whenever there is delay in arresting the subjective satisfaction of the detaining authority must be held to be not genuine or colourable. Each case must depend on its own peculiar acts and circumstances. The detaining authority may have a reason able explanation for the delay and that might be sufficient to dispel 596 the inference that its satisfaction was not genuine. But here we find that though an affidavit in reply was filed by the District Magistrate himself	 no explanation was forthcoming in this affidavit as to why the petitioner was not arrested until 23rd November	 1973	 though the order of detention was made as far back as 10th September	 1973. The learned counsel appearing on behalf of the respondent contended that the State was not expected to render any explanation in regard to the delay in arresting the petitioner pursuant to the order of detention because no such complaint was made in the petition. But this is hardly an argument which can avail the State when it is called upon to answer a rule issued on a petition for a writ of habeas corpus. It is the obligation of the State or the detaining	 authority in making its return to the rule in such a case to place all the relevant facts before the Court and if there is any delay in arresting the detenu pursuant to the order of detention which is prima facie unreasonable	 the State must give reasons explaining the delay. Vide Sk. Serajul vs State of West Bengal.(1) Since in the present case no explanation for the delay has been given in the affidavit in reply filed by the District Magistrate	 we are not at all satisfied that the District Magistrate applied his mind and arrived at a real and genuine subjective satisfaction that it was necessary to detain the petitioner with a view to preventing him from acting in a prejudicial manner. The condition precedent for the making of the order of detention was	 therefore	 not satisfied and consequently the order of detention must be quashed and set aside. We accordingly quash and set aside the order of detention and direct that the petitioner be set at liberty forthwith. V.P.S. Petitioned allowed.

On 14th April	 1973	 the petitioner was alleged to have committed theft of aluminium wire and a criminal case was filed but it was ultimately dropped and the petitioner was discharged	 because	 the witnesses were not willing to give evidence for fear of danger to their life. On 10th September	 1973	 the District Magistrate passed an order under section 3(2)(i) of the 	 detaining the petitioner with a view to prevent ing him from acting in a manner prejudicial to the maintenance of supplies and services essential to the community	 on his subjective satisfaction	 based upon the solitary incident of the theft of aluminum wire. The petitioner was actually detained on 23rd November	 1973. Allowing the petition challenging the order of detention	 HELD : The condition precedent for the making of the order of detention	 namely the existence of a. real and genuine subjective. satisfaction of the District Magistrate was not satisfied in the case. and consequently	 the order of detention must be quashed and set aside. [596D E] (a) It must be assumed that the petitioner was discharged on or about 10th September	 1973	 because	 the District Magistrate must have made the order of detention in anticipation of the order of discharge. If that was so	 though the petitioner was available for detention	 there was a delay of about two and half months in detaining the petitioner pursuant to the order of detention. This delay	 unless satisfactorily explained	 would throw considerable doubt on the genuineness of the subjective satisfaction of the District Magistrate recited in the order of detention. If the District Magistrate was really and genuinely satisfied he would have acted with greater promptitude. But he has not offered any explanation as to why the petitioner was not detained until 23rd November	 1973	 more than two months after he made the order of detention. [595D H] (b) It is the obligation of the State or the detaining authority in making its return to the rule nisi	 in cases of habeas corpus	 to place all the relevant facts before the court and if there is any delay in arresting the detenu pursuant to the order of detention	 which is prima facie unreasonable	 the State must explain the delay. The State cannot contend that the petitioner has not raised the contention in his petition. [596B C] Sk. Serajul vs State of West Bengal W.P. 2000 of 1973	 decided on September 9	 1974	 followed.