Appellant before us was detained. He is the Managing Director of a company, registered and incorporated as CompanyC1. It was an exporter and held a valid licence therefor. The company was to export products of alloy steel. Upon exporting of alloy steel, it was entitled to credits under the Duty Entitlement Pass Book (DEPB) Scheme introduced by the Government of India with an object of encouraging exports. He allegedly misdeclared both the value and description of goods upon procuring fake and false bills through one P1. The said P1 was said to have been operating three firms, CompanyC2, CompanyC3 and CompanyC4. It was allegedly found that non-alloy steel, bars, rods, etc. of value ranging from Rs. 15/- to Rs. 17/- per kg. were exported in the guise of alloy steel forgings, bars, rods, etc. by declaring their value thereof from Rs. 110/- to Rs. 150/- per kg. and the export proceeds over and above the actual price were being routed through a Channel. The officers of the Directorate of Revenue Intelligence (DRI) searched the factory as well as the residential premises of Appellant and that of P1. Various incriminating documents were recovered. Appellant and the said P1 made statements. P1 allegedly admitted to have supplied fake bills to units owned and controlled by Appellant on commission basis without actual supply of the goods. It was also found that Appellant had declared goods exported as "alloy steel" whereas after the tests conducted by Central Revenue Control Laboratory, they were found to be "other than alloy steel", i.e., non-alloy. The Consul (Economic), Consulate General of India at L1 allegedly confirmed the existence of a parallel set of export invoices. Invoices with a higher value were presented before the Indian Customs Authorities with a view to avail DEPB incentives but in fact invoices with a lower value were presented for clearance. On the aforementioned allegations, an order of detention was issued on 5.4.2005. Appellant moved for issuance of a writ of Habeas Corpus before the High Court. The said writ petition was dismissed by an order dated 23.11.2005 by a learned Single Judge. A letters patent appeal, concededly which was not maintainable, was filed thereagainst which was dismissed by reason of the impugned judgment. Although before the High Court, the principal ground urged on behalf of Appellant in questioning the legality or validity of the order of detention was unexplained delay in passing the order of detention which did not find favour with the High Court. Before us, several other grounds, viz., non placement of vital/ material documents before the detaining authority, non- supply of documents relied on or referred to in the order of detention as also non-application of mind on the part of the detaining authority had been raised. In the meantime admittedly the period of detention being over, Appellant had been set at large. He was released from custody on 17.5.2006. This appeal, however, has been pressed as a proceeding and has been initiated against Appellant.