Summarize the following court judgment. Criminal Appeal No. 511 of 1989. From the Judgment and Order dated 6.3.1989 of the Madras High Court in W.P. No. 14828 of 1988. WITH Writ Petition (Criminal) No. 205 of 1989. (Under Article 32 of the Constitution of India). U.R. Lalit and V. Balachandran for the Appellant/Petitioner. K. Rajendra Chowdhary	 V. Krishnamurthy and section Thanan jayan for the Respondents. The Judgment of the Court was delivered by VERMA	 J. Special leave granted. 903 The appellant petitioner	 Smt. N. Meera Rani	 is the wife of Nallathambi	 who has been detained under the Nation al Security Act	 1980 (Act No. 65 of 1980) (hereinafter referred to as "the Act"). An order dated 7.9.1988 was made by the Collector and District Magistrate	 Madurai	 under section 3(2) of the Act directing that the detenu be kept in custody in the Central Prison	 Madurai. Thereafter	 the State Government by its order dated 25.10.1988 made under section 12(1) of the Act has confirmed the order of deten tion agreeing with the opinion of the Advisory Board consti tuted under the Act and directed that the detenu be kept in detention for a period of 12 months from the date of his detention. This preventive detention of the detenu was challenged in the High Court of Judicature at Madras by his wife	 the appellant petitioner	 under Article 226 of the Constitution praying for issuance of a writ of habeas cor pus. The High Court by its order dated 6.3.1989 has dis missed the writ petition. The appellant petitioner has then challenged dismissal of the writ petition by the High Court by special leave under Article 136 of the Constitution of India in this Court. The appellant petitioner has also filed a writ petition under Article 32 of the Constitution of India for the same purpose in this Court challenging direct ly her husband 's preventive detention. The object of filing this writ petition directly in this Court	 in addition to the appeal by special leave	 is to raise some additional grounds to challenge the detenu 's detention. Both these matters have been heard together and are being disposed of by this common judgment. We may now state the arguments advanced to challenge the detenu 's detention before mentioning the relevant facts which are material for deciding those points. Shri U.R. Lalit	 learned counsel for the appellant petitioner	 has advanced three contentions. The first contention is that certain documents which have been referred to in some grounds of detention were not supplied to the detenu with the result that the detenu was not given a proper and rea sonable opportunity for making an effective representation and	 therefore	 the order of detention is vitiated for this reason alone. The second contention is that some documents in the form of newspaper reports showing that the detenu was apprehended and detained even prior to 21.8.1988 when the detenu was shown to have been arrested in connection with an offence punishable under section 397 I.P.C. were not placed before the detaining authority when it formed the opinion mentioned in the detention order which has also vitiated the detention order. The last contention is that the fact of detenu 's arrest in connection with an offence punishable under section 397 I.P.C. and of remand to custody by the Magistrate as well as the contents of the bail application dated 904 22.8.1988 which was rejected by the Magistrate were not taken into account by the detaining authority before passing the order of detention dated 7.9.1988 which also renders the detention order invalid. On the other hand	 Shri Chaudhary	 learned counsel for the respondents contended that even assuming that some documents referred in the grounds of detention were material and were not supplied to the detenu the effect is not to invalidate the detention order for that reason alone in view of section 5A of the Act which has been inserted by Act 60 of 1984 with effect from 21.6.1984 since the detention order can be sustained even on the remaining grounds. In respect of the detenu 's custody in connection with the offence under section 397 I.P.C. and rejection of his bail application	 it was urged that this fact was con sidered by the detaining authority and	 therefore	 it does not result in any infirmity. Shri Lalit	 on behalf of the appellant petitioner	 further contended that section 5A of the Act cannot be construed in the manner suggested by the learned counsel for the respondents since the guarantee to the detenu under Article 22(5) of the Constitution results in invalidating the entire detention order as claimed by him. The material facts mentioned in the detention order and its annexure are now stated. A branch of the Bank of Madura is located in a rented accommodation in flat No. 634	 K.K. Nagar in Madurai. On 6.8.1988	 the Bank Manager and the staff of the Bank were attending to the business of the Bank which then had 443 packets containing valuable ornaments weighing about 20	576.150 grams valued at about rupees sixty two lakhs and cash amounting to Rs.38	945.00. These gold ornaments were pledged with the Bank as security for loans advanced by the Bank of certain borrowers. At about 10.55 A.M. on 6.8.1988 the Bank was looted and these orna ments and cash were taken away by armed dacoits on the point of revolver after locking the Bank employees and customers in the strong room. The dacoits escaped in an ambassador car with registration No. TDL 9683 and a motorcycle bearing registration No. TNK 6727. The dacoits are stated to be one Karuna and some other Sri Lanka nationals who were tempo rarily living in a nearby flat which was in the possession of the detenu. It is stated that the ambassador car used in the dacoity had been stolen on 4.8.1988 from Quilon in the State of Kerala by Karuna and his companions. It is further stated that the dacoity was committed in order to fund the militant organisation known as Tamil Nadu Makkal Viduthalai Eyakkam with which the detenu has been associated and that the detenu along with these Sri Lanka nationals belonging to the Sri Lanka militant organisation had entered into a criminal conspiracy to commit these cognizable offences. The object of 905 these militant organisations is to achieve a separate Tamil Ealam in Sri Lanka and to secure secession of Tamil Nadu from the Union of India by violent means. It is further stated that the detenu received from Karuna through Ajanth and Pinto a share of the booty comprising of gold ornaments weighing about 8325. 150 grams valued at about Rs.25 lakhs and Rs. 15	000.00 in cash which was a part of the booty looted from the Bank on 6.8.1988 in addition to a box con taining one revolver	 2 pistols	 3 grenades	 6 bombs and a knife. It is further stated that on 9.8.1988 the detenu took Karuna and Ajanth in his car bearing registration No. TNU 8500 to Madras along with Babu and Rajendran and subsequent ly on 10.8.1988 the detenu sent them to Nellore in Andhra Pradesh in his car to help them escape. It is also stated that a note was sent by the detenu to the news media in the name of Tamil Nadu Makkal Viduthalai Eyakkam owning respon sibility for the dacoity and threatening the law enforcement agency and the Government servants with dire consequences if they attempted to apprehend them. It is then said that on 21.8.1988 the detenu was arrested at Samayanallur while he was driving his car bearing registration No. TNU 8500 to wards Madurai when he made a voluntary confession in the presence of witnesses. The car bearing registration No. TNU 8500 was seized at 19.15 hours on 21.8.1988 in front of Samayanallur Police Station and the detenu 's confession led to recovery of gold ornaments weighing about 7275.750 grams valued at Rs.21	85	000.00 in 172 bags and 19 empty bags with Bank tags and chits and a set of keys from the detenu 's house on 21.8.1988 at 20.15 hours. In pursuance to detenu 's confession recovery was also made of a box containing one revolver	 2 pistols with ammunition	 3 grenades	 6 bombs and one knife from the house of Anandan	 an employee of the detenu in Madurai. Further recovery of a bag containing gold ornaments weighing about 1015.600 grams valued at Rs.3	05	000.00 was made from the shop of Vijayakumar in Madurai and Vijayakumar also made a confession pursuant to which the recovery was made of gold ornaments weighing about 25.900 grams from Gurumoorthy. Subsequently	 these ornaments were identified as those which had been looted in the above mentioned dacoity on 6.8.1988. It is on these grounds that the impugned detention order dated 7.9.1988 was passed for the detenu 's preventive detention under the Act. The detention order as well as its annexure containing the relevant ground of detention are quoted as under: "ANNEXURE 'A ' 906 PROCEEDINGS OF THE COLLECTOR AND DISTRICT MAGISTRATE	 MADURAI. PRESENT: THIRU M. DEVARAJ	 I.A.S. N.S.A. NO. 73/88 Dated: 7.9.1988 DETENTION ORDER WHEREAS	 I	 M. DEVARAJ	 I.A.S. Collector and District Magistrate	 Madurai	 am satisfied with respect to the person known as Thiru Nallathambi @ Thambi	 male	 aged 30 years	 S/o (late) Thiru section Mathu	 residing at Block No. 2	 H.I.G. Colony	 Anna Nagar	 Madu rai Town that with a view to preventing him from acting in any manner prejudicial to the maintenance of public order	 it is necessary to make the following order. (2) Now	 therefore	 in exercise of the powers conferred by sub section (2) of section 3 of the (Central Act 65 of 1980) read with orders issued by the Government in G.O. Ms. No. 1169	 public (L & O F) Department	 dated 3.8.1988 under sub section (3) of the said Act	 I hereby direct that the said Thiru Nallathambi @ Thambi be detained and kept in custody in the Central Prison	 Madurai. Given under my hand and seal of office	 this the 7th day of September	 1988. sd/ Collector and District Magistrate	 Madurai To Thiru Nallathambi @ Thambi	 S/o (Late) Thiru section Mathu	 Block No. 2	 H.I.G. Colony	 Anna Nagar	 Madurai 20. (Now in Central Prison	 Madurai as remand prisoner) 907 Through. Thiru V.S. Ganapathy	 Deputy Superin tendent of Police	 Tirupparankundram	 Madurai City	 for service under acknowledgement." "ANNEXURE 'B ' N.S.A. No. 73/88 Dated 7.9.88 Sub: (Central Act 65 of 1980) detention of Thiru Nallathambi alias Thambi	 Male aged 30 years	 S/o (Late) section Mathu	 2	 H.I.G. Colony	 Anna Nagar	 Madu rai section 3(2) of the National Security Act	 1980 Grounds of detention. A detention order under section 3(2) of the (Central Act 65 of 1980) has been made on Thiru Nallathambi alias Thambi	 male	 aged 30 years	 s/o (Late) section Mathu	 2	 H.I.G. Colony	 Anna Nagar	 Madurai vide order NSA No. 73/88 dated 7.9.1988. (2) The grounds on which the said deten tion has been made are as follows: XXX XXX XXX XXX (9) In furtherance of the conspiracy Thiru Nallathambi sent a note to the news media in the name of Tamil Nadu Makkal Vidhuthalai Eyakkam owning responsibility for the dacoity and threatening the law enforcement agency and Government servants with dire consequences if they dare to apprehend them. (10) On 21.8.88 at 1400 hours	 Thiru Nallathambi	 was arrested at Samayanallur while he was driving his car TNU 8500 towards Madurai. He gave a voluntary confession which was recorded in the presence of witness (1) Kulanthani Anandan	 Village Administrative Officer	 Sathamgalam and (2)Pannerselvam	 Village Administrative Officer	 Thiruppalai. The car TNU 8500 was seized at 1915 hours on 21.8.88 in front of Samayanallur Police Sta tion. In pursuance of his confession gold jewels weighing about 7275.750 grams valued at Rs.21	85	000.00 in 172 908 bags and 19 empty bags with bank tags and chits and a set of key were recovered from his house on 21.8.88 at 20.15 hours. Further in pursuance of his confession a box containing 1 revolver	 2 pistols with ammunition	 3 gre nedes	 6 bombs	 1 knife was recovered from the house of accused Thiru Anand located in 27	 Lakshimipuram	 6th Street	 Madurai who is also an employee under Thiru Nallathambi. Further pursuant to his confession a bag containing gold jewels weighing about 1015.600 grams valued Rs.3	05	000.00 was recovered from the moulding workshop of accused Thiru Vijayakumar located in 10 A	 Bharatiar Main Street	 K. Pudur	 Madurai. Pursuant to the confession of Thiru Vijayakumar gold jewels weighing about 25.900 grams was recovered from the accused Thiru Gurumoorthy. The above jewels recovered were identified to be stolen from the Bank of Madura on 6.8.88. (11) The chance prints developed from the scene of occurrance in Bank of Madu ra	 K.K. Nagar Branch	 Madurai tallied with the fingerprints of accused Thiru Karuna. (12) The chance prints developed from the ambassador car TDL 9683 which was abandoned at new Mahali Party Street	 Madurai after the commission of armed dacoity tallied with the finger prints of accused Thiru Karuna. (13) The chance prints developed from the ambassador car TDL 1919 and TDT 3699 which were used in earlier attempts tallied with the finger prints of accused Thiru Karu na. XXX XXX XXX (18) I am aware that Thiru Nalla thambi is in remand and would be proceeded with under normal law. Though the name of Thiru Nallathambi does not find a place in the F.I.R. and though he has not physically par ticipated in the commission of the armed dacoity	 a reading of the records and the statement clearly disclosed the facts that Thiru Nallathambi	 was an active participant in the said conspiracy to loot the K.K. Nagar branch of the Bank of Madura. In 909 furtherance of the conspiracy Thiru Nallatham bi had made preparation for the commission of the armed dacoity as discussed in para 4 above. Further Thiru Nallathambi had received a portion of booty of gold jewels weighing about 8325. 150 grams valued Rs.25 lakhs and cash Rs. 15	000.00 from the stolen jewels and cash robbed from the abovesaid Bank and re ceived a box containing 1 revolver	 2 pistols	 3 grenades	 6 bombs and a knife used in the commission of offence. Subsequently	 the said jewels	 firearms and bombs mentioned above were recovered in pursuance of the confession of Thiru Nallathambi. Further Thiru Nallatham bi sent a notice to the News Media in the name of "Tamil Nadu Makkal Vidhuthalai Eyakkam" owning responsibility of the armed dacoity and threatening the law enforcement agency and Government servants with dire consequences if they dare to apprehend them. Therefore	 as a detaining authority I am satisfied that there is compelling necessity warranting the deten tion of Thiru Nallathambi under the and if Thiru Nallathambi is allowed to remain at large it will not be possible to prevent him from indulging in activities prejudicial to the maintenance of public order. (19) I am also satisfied on the materials mentioned above that if Thiru Nalla thambi is allowed to remain at large	 he will indulge in further activities prejudicial to the maintenance of public order and further the recourse to normal law would not have their desired effect of effectively preventing him from indulging in activities prejudicial to the maintenance of public order and	 there fore	 I consider that it is necessary to detain him in custody with a view to prevent ing him from acting in any manner prejudicial to the maintenance of public order. XXX XXX XXX XXX. " The first argument of the learned counsel for the appel lantpetitioner is based on the above quoted grounds in para Nos. 11	 12 and 13 relating to the chance printes developed from the scene of occurrence in the Bank	 the ambassador cars TDL 9683	 TDL 1919 and TDT 3699 which tallied with the finger prints of Karuna	 an accused in the Bank dacoity case. It was argued that the report of the finger prints expert who gave this opinion was not supplied to the 910 detenu even though it was a material document to enable the detenu to make an effective representation in respect of these grounds of detention. Another similar document relates to ground No. 9 which mentions a note sent by the detenu to the newspaper media in the name of Tamil Nadu Makkal Vidu thalai Eyakkam owning responsibility for the Bank dacoity and threatening the law enforcement agency and Government servants with dire consequences if they dare to apprehend them. It was argued that the non supply of these documents on which the grounds of detention Nos. 9	 11	 12 and 13 are based has deprived the detenu of his legitimate right of effective representation against the same which is guaran teed under Article 22(5) of the Constitution of India and this defect results in invalidating the entire detention order. The reply of learned counsel for the respondents is that section 5A of the Act is a complete answer to this argument inasmuch as this defect at best requires only the exclusion of these grounds of detention and no more. It was urged by learned counsel for respondents that the remaining grounds of detention were sufficient to sustain the deten tion order by virtue of section 5A of the Act. Learned counsel for the appellant petitioner also contended that such a result is not envisaged by section 5A of the Act which did not apply to such a situation and the guarantee under Article 22(5) of the Constitution rendered the defect fatal to the detention order. Section 5A of the Act clearly provides that the deten tion order under section 3 of the Act has been made on two or more grounds	 shall be deemed to have been made separate ly on each of such grounds and accordingly such order shall not be deemed to be invalid merely because one or some of the grounds is or are invalid for any reason whatsoever. It further says that the detaining authority shall be deemed to have made a detention order after being satisfied as provid ed in section 3 with reference to the remaining grounds or ground. In other words	 a ground of detention which is rendered invalid for any reason whatsoever	 shall be treated as non existent and the surviving grounds which remain after excluding the invalid grounds shall be deemed to be the foundation of the detention order. Section 5A was inserted in the Act with effect from 21.6.1984 to overcome the effect of the decisions which had held that where one or more of the grounds of detention is found to be invalid	 the entire detention order must fall since it would not be possible to hold that the detaining authority making such order would have been satisfied as provided in section 3 with reference to the remaining ground or grounds. It is	 therefore	 doubt ful whether the construction of Section 5A suggested by learned counsel for the appellant petitioner can be accept ed. However	 in the 911 present case	 it is not necessary for us to express any concluded opinion on this point since we have reached the conclusion that the detention order must be quashed on one of the other contentions to which we shall advert later. The second argument of learned counsel for the respond ents may also be considered before we deal with the last contention on which we propose to quash the detention order. The second contention is that the detenu 's arrest in connec tion with the Bank dacoity case is shown on 21.8.1988 when he was actually arrested much earlier in connection with the Bank dacoity as appeared in some local newspapers but those newspaper reports are not shown to have been placed before the detaining authority. On this basis	 it was argued that the satisfaction reached by the detaining authority has been vitiated. The question of the date on which the detenu was taken into custody in connection with the Bank dacoity is material for the last contention which we shall consider hereafter but the same has no relevance in this connection. Contents of the newspaper reports except for the fact of earlier arrest which was known to the detaining authority were not relevant for the satisfaction needed to justify making of the detention order. The detaining authority 's satisfaction was to be formed on the basis of material relevant to show the detenu 's activities requiring his preventive detention with a view to prevent him from acting in a manner prejudi cial to the maintenance of the public order. The newspaper reports indicating that the detenu was already in custody could at best be relevant only to show the fact that he ' was already in detention prior to the making of the detention order. We have already mentioned that this fact of the detenu 's custody before the making of the order of detention on 7.9.1988 was known to the detaining authority and its effect is a separate point considered later. The other contents of the newspaper reports had no other relevance for this purpose. This contention of learned counsel for the appellantpetitioner is	 therefore	 rejected. The last contention of learned counsel is based on the fact that the detenu was already in custody in connection with the Bank dacoity when the order of detention was made on 7.9.1988. It is also clear that on 22.8.1988 the detenu had moved a bail application which had been rejected and he had been remanded to custody. It is significant that the detention order itself describes the detenu as a person in custody in the Central Prison at Madurai and the order was served on him through the Superintendent of the Prison. The question now is of the effect of 912 the detenu 's earlier custody on the validity of the deten tion order. The contents of the detention order and its accompanying annexure clearly show that the detaining authority was aware and conscious of the fact that the detenu was already in custody in connection with the Bank dacoity at the time of making the detention order. The fact that the detenu 's application for grant of bail in the dacoity case had been rejected on 22.8.1989 and he was remanded to custody for the offence of bank dacoity punishable under section 397 I.P.C. is also evident from the record. The detention order came to be made on 7.9.1988 on the above grounds in these circum stances. In the detention order the detaining authority recorded its satisfaction that the detenu 's preventive detention was necessary to prevent him from indulging in activities prejudicial to maintenance of public order in which he would indulge if he was allowed to remain at large. The above quoted paragraphs 18 and 19 of the Annexure to the detention order clearly disclose this factual position. However	 it may be pointed out that the detention order read along with its annexure nowhere indicates that the detaining authority apprehended the likelihood of the detenu being released on bail in the dacoity case and	 therefore	 consid ered the detention order necessary. On the contrary	 its contents	 particularly those of the above quoted paragraph 18 clearly mention that the detenu had been remanded to custody for being proceeded against in due course and even though his name was not mentioned in the F.I.R. as one of the dacoits who participated in the commission of the armed Bank dacoity yet the documents clearly revealed that the detenu was an active participant in the conspiracy to loot the bank in furtherance of which the dacoity was committed; and that considerable booty of that crime including weapons	 bombs and hand grenades were recovered from his possession pursuant to the detenu 's confession made after his arrest. These averments in the detention order indicate the satis faction of the detaining authority that in its view there was ample material to prove the detenu 's active participa tion in the crime and sharing the booty for which offence he had already been taken into custody. This view of the de taining authority negatives the impression of likelihood of detenu being released on bail. The real question	 therefore	 is: whether after the above satisfaction reached by the detaining authority and when the detenu was already in custody being arrested in connection with the Bank dacoity	 could there be any reason able basis for making the detention order and serving it on the detenu during his custody? We may now refer to the decisions on the basis of which this 913 point is to be decided. The starting point is the decision of a Constitution Bench in Rameshwar Shaw vs District Magis trate	 Burdwan & Anr.	 [964] 4 SCR 92 1. All subsequent decisions which are cited have to be read in the light of this Constitution Bench decision since they are decisions by Benches comprised of lesser number of Judges. It is obvious that none of these subsequent decisions could have intended taking a view contrary to that of the Constitution Bench in Rameshwar Shaw 's case (supra). The detention order in Rameshwar Shaw 's case (supra) was made and also served on the detenu while he was in jail custody. The detenu was then in jail where he had been kept as a result of the remand order passed by the competent court which had taken cognizance of a criminal complaint against him. The Constitution Bench considered the effect of the detenu 's subsisting detention at the time of making of the order of preventive detention and held that the effect thereof had to be decided on the facts of the case; and that this was a material factor to be considered by the detaining authority while reaching the satisfaction that an order of preventive detention was necessary to prevent the detenu from acting in a manner prejudicial to the maintenance of public order after his release. It was indicated that the detenu 's subsisting custody did not by itself invalidate the detention order but facts and circumstances justifying the order of preventive detention notwithstanding his custody were necessary to sustain such an order. The position of law was summarised by their Lordships as under: "As an abstract proposition of law	 there may not be any doubt that section 3(1)(a) does not preclude the authority from passing an order of detention against a person whilst he is in detention or in jail; but the relevant facts in connection with the making of the order may differ and that may make a difference in the application of the principle that a detention order can be passed against a person in jail. Take for instance	 a case where a person has been sentenced to rigorous imprisonment for ten years. It cannot be seriously suggested that soon after the sentence of imprisonment is pronounced on the person	 the detaining authority can make an order directing the detention of the said person after he is released from jail at the end of the period of the sentence imposed on him. In dealing with this question	 again the considerations of proximity of time will not be 914 irrelevant. On the other hand	 if a person who is undergoing imprisonment	 for a very short period	 say for a month or two or so	 and it is known that he would soon be released from jail	 it may be possible for the authority to consider the antecedent history of the said person and decide whether the detention of the said person would be necessary after he is released from jail	 and if the authority is bona fide satisfied that such detention is necessary	 he can make a valid order of deten tion a few days before the person is likely to be released. The antecedent history and the past conduct on which the order of detention would be based would	 in such a case	 be proximate in point of time and would have a rational connection with the conclusion drawn by the authority that the detention of the person after his release is necessary . . Therefore	 we are satisfied that the question as to whether an order of detention can be passed against a person who is in detention or in jail	 will always have to be determined in the circum stances of each case. The question which still remains to be considered is: can a person in jail custo dy	 like the petitioner	 be served with an order of detention whilst he is in such custo dy? XXX XXX XXX XXX We have already seen the logical process which must be followed by the authority in taking action under section 3(1)(a). The first stage in the process is to examine the material adduced against a person to show either from his conduct or his antecedent history that he has been acting in a prejudicial manner. If the said material appears satisfactory to the authority	 then the authority has to consider whether it is likely that the said person would act in a prejudicial manner in future if he is not prevented from doing so by an order of detention. If this question is answered against the petitioner	 then the detention order can be properly made. It is obvious that before an authority can legitimately come to the conclusion that the detention of the person is neces sary to prevent him from acting in a prejudi cial manner	 the authority has to be satisfied that if the person is not detained	 he would act in a prejudicial manner and that inevita bly postulates freedom of action to the said person 915 at the relevant time. If a person is already in jail custody	 how can it rationally be postulated that if he is not detained	 he would act in a prejudicial manner? At the point of time when an order of detention is going to be served on a person	 it must be patent that the said person would act prejudi cially if he is not detained and that is a consideration which would be absent when the authority is dealing with a person already in detention. The satisfaction that it is neces sary to detain a person for the purpose of preventing him from acting in a prejudicial manner is thus the basis of the order under section 3(1)(a)	 and this basis is clearly absent in the case of the petitioner. Therefore	 we see no escape from the conclusion that the deten tion of the petitioner in the circumstances of this case	 is not justified by section 3(1)(a) and is outside its purview." (at pages 929 931 of SCR) (emphasis supplied) On the above principle the Constitution Bench also explained the decision of the Assam High Court in Sahadat Ali vs State of Assam & Ors.	 A.I.R. 1953 Assam 97 in Saha dat Ali 's case (supra) the Government had decided to abandon the pending prosecution in public interest and action for detenu 's release was taken. In anticipation of his release	 the order of detention was passed and it was served after he was actually released. In these circumstances the detention order and its service was held valid. The test indicated by the Constitution Bench was duly satisfied. It is this principle and the test indicated therein which has to be applied in all such cases. Read in this manner the conclusion reached in each of the subsequent decisions satisfies this test. In Kartic Chandra Guha vs The State of West Bengal and others	 the order of preventive detention passed while the detenu was in custody was upheld since there was a likelihood of his release on bail and resuming his desperate criminal activities prejudicial to the mainte nance of public order. The facts of that case	 therefore	 justified making the detention order according to the test laid down by the Constitution Bench in Rameshwar Shaw 's case (supra). Dr. Rarnakrishna Rawat vs District Magistrate	 Jabalpur and another	 was a case in which the order of detention was passed while the detenu was in jail custody in a proceeding under section 151 read with section 117 Cr. P.C. The detention order was upheld since 916 the custody was obviously of a short duration and on the basis of the antecedent activities of the detenu in the proximate past	 the detaining authority could reasonably reach its subjective satisfaction that the detenu had the tendency to act in a manner prejudicial to the maintenance of public order after his release on the termination of the security proceedings under the Code. In Vijay Kumar vs State of Jammu & Kashmir and others	 the detention order was quashed because it did not give the slightest indication that the detaining authority was aware that the detenu was already in jail. The further question of the detaining authority 's subjective satisfaction that it was necessary even then to make an order for preventing him from acting in a manner prejudicial to the security of the State did not	 therefore	 arise. While dealing with this aspect the correct position was reiterated as under: "Preventive detention is resorted to	 to thwart future action. If the detenu is already in jail charged with a serious offence	 he is thereby prevented from acting in a manner prejudicial to the security of the State. May be	 in a given case there yet may be the need to order preventive detention of a person already in jail. But in such a situation the detaining authority must disclose awareness of the fact that the person against whom an order of preventive detention is being made is to the knowledge of the authority already in jail and yet for compelling reasons a preventive deten tion order needs to be made. There is nothing to indicate the awareness of the detaining authority that detenu was already in jail and yet the impugned order is required to be made. This	 in our opinion	 clearly exhibits non application of mind and would result in inval idation of the order." (at page 48) It is obvious that in this decision also the test indicated by the Constitution Bench in Rameshwar Shaw 's case (supra) was applied and the detention order was quashed on that basis. In Alijan Mian and another vs District Magistrate	 Dhanbad; 	 the detention order was upheld even though the detenu was in jail custody on the date of passing of the detention order because the detention order showed that the detaining authority was alive to the fact and yet it was satisfied that if the detenu was enlarged on bail	 which was quite likely	 he would create problems of public order which necessitated his preventive detention. In Ramesh Yadav 917 vs District Magistrate	 Etah and others	 the detention order was passed when the detenu was in jail on the mere apprehension of likelihood of grant of bail on the basis of some stale grounds and a ground in respect of which the detenu had already been acquitted. It is obvious that even with the likelihood of grant of bail	 the grounds of detention being stale or non existent on the ground of the detenu 's acquittal	 they did not satisfy the required test of the detention order being based on valid grounds showing detenu 's activities proximate in point of time to justify the detaining authority 's satisfaction as reasona ble. It was observed in passing that if the apprehension of the detaining authority about the likelihood of grant of bail was correct then it was open to challenge the bail order in a higher forum. This observation has accordingly to be read in the context of the facts in which it was made. In Binod Singh vs District Magistrate	 Dhanbad	 Bihar and others; 	 the detention order was held to be invalid because the jail custody of the detenu at the time of service of the order as also the prospect of his release were not considered while making the detention order. It was held that the detention order was invalid on the ground of non application of mind to these relevant factors even if the detention was otherwise justified. The decision in Rameshwar Shaw 's case (supra) was relied on and it was reiterated as under: "If a man is in custody and there is no immi nent possibility of his being released	 the power of preventive detention should not be exercised. In the instant case when the actual order of detention was served upon the detenu	 the detenu was in jail. There is no indication that this factor or the question that the said detenu might be released or. that there was such a possibility of his release	 was taken into consideration by the detaining authority properly and seriously before the service of the order. A bald statement is merely an ipse dixit or the officer. If there were cogent materials for thinking that the detenu might be released then these should have been made apparent." (at pages 420 421) In Poonam Lata vs M.L. Wadhawan and another; 	 it was reiterated that detenu being already in jail at the time of passing detention order does not by itself vitiate the detention if the detaining authority is aware of this fact but even then it is satisfied about the necessity of preventive detention. The Constitution Bench decision in Rameshwar Shaw 's case (supra) and the other earlier deci sions were 918 referred while reaching this conclusion. The correct posi tion was reiterated and summarised as under: "It is thus clear that the fact that the detenu is already in detention does not take away the jurisdiction of the detaining author ity in making an order of preventive deten tion. What is necessary in a case of that type is to satisfy the court when detention is challenged on that ground that the detaining authority was aware of the fact that the detenu was already in custody and yet he was subjectively satisfied that his order of detention became necessary. In the facts of the present case	 there is sufficient material to show that .the detaining authority was aware of the fact that the petitioner was in custody when the order was made	 yet he was satisfied that his preventive detention was necessary. " (at page 58) A recent decision on the point is Smt. Shashi Aggarwal vs State of U.P. and others; 	 in which also the settled principle is reiterated and it is pointed out that the ultimate decision depends on the facts of a partic ular case	 the test to be applied remaining the same	 as indicated in Rameshwar Shaw 's case (supra). It was also pointed out in this decision that the earlier decisions of the Supreme Court in Ramesh Yadav	 (supra) and Binod Singh	 (supra) do not run counter to the decision in Alijan Mian 's case (supra). In each of these cases the conclusion was reached on the facts of the particular case	 the test ap plied being the same. Similarly	 in this decision it was once again pointed out that the detenu being already in jail	 the mere possibility of his release on bail was not enough for preventive detention unless there was material to justify the apprehension that the detenu would indulge in activities prejudicial to the maintenance of public order in case of his release on bail. The detention order in that case had been made merely on the ground that the detenu was trying to come out on bail and there was enough possibility of his being bailed out. It was	 therefore	 held that the mere possibility of his release on bail and a bald statement that the detenu would repeat his criminal activities was alone not sufficient to sustain the order of preventive detention in the absence of any material on the record to show that if released on bail he was likely to commit activ ities prejudicial to the maintenance of public order. The detention order in that case was quashed on the ground that the requisite material to entertain such an apprehension reasonably was not present. The conclusion reached therein	 on the facts and circumstances of the case	 is as under: 919 "In the instant case	 there was no material made apparent on record that the detenu	 if released on bail	 is likely to commit activi ties prejudicial to the maintenance of public order. The detention order appears to have been made merely on the ground that the detenu is trying to come out on bail and there is enough possibility of being bailed out. We do not think that the order of detention could be justified only on that basis." (at page 440) A review of the above decisions reaffirms the position which was settled by the decision of a Constitution Bench in Rameshwar Shaw 's case (supra). The conclusion about validity of the detention order in each case was reached on the facts of the particular case and the observations made in each of them have to be read in the context in which they were made. None of the observations made in any subsequent case can be construed at variance with the principle indicated in Ra meshwar Shaw 's case (supra) for the obvious reason that all subsequent decisions were by benches comprised on lesser number of Judges. We have dealt with this matter at some length because an attempt has been made for some time to construe some of the recent decisions as modifying the principle enunciated by the Constitution Bench in Rameshwar Shaw 's case (supra). We may summarise and reiterate the settled principle. Subsisting custody of the detenu by itself does not invali date an order of his preventive detention and the decision must depend on the facts of the particular case; preventive detention being necessary to prevent the detenu from acting in any manner prejudicial to the security of the State or to the maintenance of public order etc. ordinarily it is not	 needed when the detenu is already in custody; the detaining authority must show its awareness to the fact of subsisting custody of the detenu and take that factor into account while making the order; but	 even so	 if the detaining authority is reasonably satisfied on cogent material that there is likelihood of his release and in view of his an tecedent activities which are proximate in point of time he must be detained in order to prevent him from indulging in such prejudicial activities	 the detention order can be validly made even in anticipation to operate on his release. This appears to us	 to be the correct legal position. Applying the above settled principle to the facts of the present case we have no doubt that the detention order	 in the present case	 must be quashed for this reason alone. The detention order read with 920 its annexure indicates the detaining authority 's awareness of the fact of detenu 's jail custody at the time of the making of the detention order. However	 there is no indica tion therein that the detaining authority considered it likely that the detenu could be released on bail. In fact	 the contents of the order	 particularly	 the above quoted para 18 show the satisfaction of the detaining authority that there was ample material to prove the detenu 's complic ity in the Bank dacoity including sharing of the booty inspite of absence of his name in the F.I.R. as one of the dacoits. On these facts	 the order of detention passed in the present case on 7.9.1988 and its confirmation by the State Government on 25.10.1988 is clearly invalid since the same was made when the detenu was already in jail custody for the offence of bank dacoity with no prospect of his release. It does not satisfy the test indicated by the Constitution Bench in Rameshwar Shaw 's case (supra). We hold the detention order to be invalid for this reason alone and express no opinion on merits about the grounds of detention. Consequently	 the aforesaid order of detention dated 7.9.1988 passed by the Collector and District Magistrate	 Madurai	 and the order of confirmation dated 25.10.1988 by the Government of Tamil Nadu are quashed. The appeal and the writ petition are allowed. This	 however	 will not affect the detenu 's custody in connection with the criminal case under section 397 I.P.C. We may also clarify that in case the detenu is released in the aforesaid criminal case	 the question of his preventive detention under the Act on the above material may be reconsidered by the appropriate au thority in accordance with law and this judgment shall not be construed as an impediment for that purpose. No costs. R.N.J. Appeal and Petition allowed.

By an order dated 7.9.88 the Collector & District Magis trate Madurai under section 3(2) of the made an order for keeping in custody Nallathambi	 the husband of the appellant/ petitioner. The State Govt. on 25.10.88 by its order under section 12(1) of the Act confirmed the order of detention agreeing with the opinion of the Advisory Board and ordered the detention of the detenue for 12 months from the date of his detention. The wife of the detenue challenged this preventive detention by filing a writ of Habeas Corpus in the High Court of Madras. The High Court by its order dated 6.3.89 dismissed the writ petition. The appellant petitioner challenged the dismissal of the writ by the High Court by way of special leave and also by filing a writ petition under Article 32 of the Constitution of India. This Court while quashing the detention order	 HELD: Subsisting custody of the detenue by itself does not invalidate an order of his preventive detention and the decision must depend on the facts of the particular case; preventive detention being necessary to prevent the detenue from acting in any manner prejudicial to the security of the State or to the maintenance of public order etc. ordinarily it is not needed when the detenue is already in custody; the detaining authority must show its awareness to the fact of subsisting custody of the detenue and take that factor into account while making the order; but	 even so	 if the detain ing authority is reasonably satisfied on cogent material that there is likelihood of his release and in view of his antecedent activities which are proximate in point of time he must be detained in order to prevent him from indulging in such prejudicial activities	 the detention order can be validly made even in anticipation to operate on his release. [919E G] In the instant case	 the the detention order read with its annexure indicates the detaining authority 's awareness of the fact of detenue 's 902 jail custody at the time of the making of the detention order. However there is no indication therein that the dete nue could be released on bail. On the contrary the detention order shows satisfaction of the detaining authority that there was ample material to support the criminal charge against the detenue. The order of detention passed on 7.9.1988 and its confirmation by the State Government on 25.10.1988 is therefore clearly invalid since the same was made when the detenue was already in jail custody for the offence of bank dacoity with no prospect of his release. [919H 920C] Rameshwar Shaw vs District Magistrate	 Burdwan & Anr. 	 ; upon. Kartic Chandra Guha vs The State of West Bengal & Ors.	 ; Dr. Ramakrishna Rawat vs District Magis trate	 Jabalpur & Anr.	 ; Vijay Kumar vs State of Jammu & Kashmir & Ors. 	 ; ; Alijan Mian & Anr. vs District Magistrate	 Dhanbad	 ; ; Ramesh Yadav vs District Magistrate	 Etah & Ors.	 ; Binod Singh vs District Magistrate	 Dhan bad	 Bihar & Ors.	 ; ; Poonam Lata vs M.L. Wadhawan & Anr.	 ; and Smt. Shashi Aggarwal vs State of U. P. & Ors.	 ;