The Prime Minister's Office today denied media reports that a private company has been allotted 70 MHz of spectrum for Rs.1000 crore through a deal with ISRO, saying no decision has been taken and hence charges of revenue loss of a whopping Rs.two lakh crore were without any basis.

The PMO clarification came even as BJP trained its guns on Prime Minister Manmohan Singh, saying ISRO is directly under his charge and he cannot escape responsibility or accountability for the 2005 "deal".

Maharashtra Chief Minister Prithviraj Chavan, who was then Union minister dealing with the department, said in Mumbai, "in 2010, when I was a member of the Space Commission, this issue came up...it was decided to cancel it (agreement), that I am sure".

In Bangalore, former ISRO chairman G Madhavan Nair, who was heading the organisation in 2005, sought to distance himself from the whole controversy on the ground that the organisation had nothing to do with spectrum allocation.

"Spectrum allocation is not our business. We build and operate satellites".

A statement from spokesperson of the PMO said that the office had seen media reports alleging loss of government revenue in a contract entered into by ANTRIX (the commercial arm of Indian Space Research Organisation) and Devas Multimedia Private Limited due to lease of space segment capacity which would use S-Band spectrum.

"The Comptroller and Auditor General's office and Department of Space have already issued statements stating the factual position on the matter.

"It is further clarified that no decision has been taken by the government to allocate space segment using S-Band spectrum to ANTRIX or Devas. Hence, the question of revenue loss does not arise and any such reports are without basis in fact," the PMO statement said.

Media reports had stated that the Department of Space, which comes directly under the Prime Minister, had allocated 70 MHz of S-Band spectrum to Devas Multimedia for Rs 1,000 crore. The actual value of this was estimated to be around Rs 2 lakh crore, the reports claimed.

BJP alleged that the allocation was done quietly and without bringing the issue into the public domain.

Dubbing the PMO clarification as meaningless, the party said there are important questions which the Prime Minister must explain to the nation.

"It is self evident that Manmohan Singh is leading a regime that is the most corrupt after independence...yet it is claimed that he is Mr.Clean", BJP spokesperson Ravi Shankar Prasad told reporters.

Prasad said Singh should answer whether ISRO sought his approval for the 2005 deal and if so on what terms and conditions.

Did the Department of Space headed by the Prime Minister insist upon public auction of the spectrum in view of largescale expansion of mobile telephony and other related use. If not, why not," he asked.

"There is collusion at high level. There are no checks and balances and there is virtual collapse of the system where scam after scam and scandal after scandal has become the order of the day", he said.