Respondents. Judgement PRAKASH NARAIN, C.J. : - By these petitions under Article 226 of the Constitution a challenge is made to the vires of Sections 4, 6 and 58 of the Post Office Act, 1898, hereinafter referred to as the Act, and as a consequence thereof to declare that certain searches and seizures made were illegal and the respondents are liable to return the articles seized. A further prayer is made that the searches and seizures being illegal and contrary to Section 165 of the Criminal P.C., the prosecutions launched as a result of the said searches and seizures be quashed and the articles seized be ordered to be returned to the petitioners. 2. Section 4 of the Act is claimed to be ultra vires Arts.14 and 19(1)(a) and (g) of the Constitution. Section 58 is challenged as it has to be read along with Section 4 of the Act, the alleged violation of which resulted in searches and seizures and prosecutions. 3. The facts of the cases are these. The Post Master General Delhi Circle, came to know that allegedly M/s. Inland Commercial (TPT) Service, hereinafter referred to as the firm, was running a parallel postal service in violation of Section 4 and other provisions of the Act by receiving and collecting letters from various parties and individuals against payment and despatching the same to the addressees at their respective destinations in Bombay, Calcutta, Madras, Nagpur etc., where postal communication exists. Accordingly, a report was lodged with the Police by the Senior Superintendent of Post Office, Delhi Division, Delhi, by communication dated November 29, 1978. The Police after getting permission from the District Magistrate, Delhi, as required by Section 155(2) of the Criminal P.C., raided the premises of the firm on December 12, 1978 and seized documents showing that the firm was actually running a parallel postal service. After completing the investigations the Police authorities launched a prosecution against the firm and the matter is sub judice. In October 1, 1980, it again came to light that the said firm was still carrying on with its activity of allegedly running a postal service. At about 4.00 A. M. on Oct. 1, 1980 representatives of the firm were seen taking about 21 parcels containing registered letters and parcels booked by the firm from its customers in two 3 wheeler scooters to Palam Airport for booking by air freight. At about 4.00 A. M. on Oct. 1, 1980 representatives of the firm were seen taking about 21 parcels containing registered letters and parcels booked by the firm from its customers in two 3 wheeler scooters to Palam Airport for booking by air freight. The Police apprehended these people and also seized certain articles. Out of the 21 parcels/packets seized three packets contained 273 letters which were destined for various stations like Bombay, Calcutta, Gauhati and Siliguri. The Police prepared a list of these letters and articles. The police carried out some investigation and then applied to the area Magistrate for making further investigation. Enquiries by the postal authorities revealed that the firm was running three branches in Delhi where registered articles were booked for onward transmission at the rate of Rs. 1/- per article and parcels were booked at a fee of Rs. 10/- per kg. Further enquiries revealed that M/s. Delux Airways was also a branch of the said firm. On the night of October 31, 1980, the Police conducted raids in the several premises of the firm. As a result several articles and registered articles were recovered. Inasmuch as by reason of one search and seizure prosecution is pending and with regard to other searches and seizures investigation is going on, letters and articles seized in the raids have been detained. The petitioners in Civil Writ No.90 of 1981 are customers of the firm and claim return of the said letters and articles by preferring the aforesaid challenge. In other petition the firm as one of the petitioners has raised the same pleas. 4. In Writ Petition No.13 of 1981 petitioner No.1 is the firm, petitioners 2 to 5 are the partners of the firm and petitioners 6 and 7 are said to be the customers of the firm. In Writ Petition No.90 of 1981 the petitioners are customers of the firm which has been made respondent No.5. 5. By way of return to the rule nisi affidavits have been filed on behalf of the Central Government, the postal authorities, the Delhi Administration and Officer-in-Charge of Crime Branch, namely, the Police. Their stand is common. It is contended that the firm was allegedly carrying on a rival postal service in violation of the provisions of the Act. 5. By way of return to the rule nisi affidavits have been filed on behalf of the Central Government, the postal authorities, the Delhi Administration and Officer-in-Charge of Crime Branch, namely, the Police. Their stand is common. It is contended that the firm was allegedly carrying on a rival postal service in violation of the provisions of the Act. They challenge the corr