"Whenever the opposition seeks to know from Manmohan Singh what action has been taken with regard to corruption, the only thing the Prime Minister says is he did not know about it," BJP spokesperson Ravishankar Prasad said here on Saturday.
Prasad was speaking at a seminar on `Corruption, Misuse of Government and Constitutional Institutions`, organised by legal cell of state BJP.
"New scams by UPA government are being reported almost every day, but the Prime Minister is still quiet," he said.
The BJP leader claimed that when 2G spectrum scam was taking place, the Prime Minister, being the head of cabinet, merely wrote letters to former telecom minister A Raja, seeking information about the allocation of 2G licenses.
Raja gave licenses to his own people, disregarding TRAI`s direction to allot the spectrum through an auction, he alleged.
"The PM did not examine the whole matter, nothing happened to stop such transactions by Raja....It was a conspiracy of silence on the part of the PM," the senior BJP leader said.
Prasad said even now Singh had not been forthcoming on the latest "S-band spectrum scam".
Referring to black money stashed away in foreign banks, the BJP leader quoted a report of the Global Financial Integrity and said over Rs 22 lakh crore, which came from India, were lying in banks abroad.
Prasad also claimed that 147 countries were signatories to the UN Convention on Corruption, which would enable the government to disclose names of Indians who had put away their black money abroad. But India did not sign the convention, he said.
He asked Finance Minister Pranab Mukherjee and the Prime Minister as to why they were not disclosing the names of the Indian account-holders in foreign banks.
Prasad asked people, particularly lawyers, to unite and come forward to fight against the "corrupt UPA government".