Newly-nominated BJP leader Subramanian Swamy, who was fielded by the ruling side, demanded recording of statement from former Prime Minister Manmohan Singh along with others named in the judgement of an Italian court recently.
The ruling and the opposition benches clashed repeatedly as the House took up a short-duration discussion on the raging row over the Rs 3600 crore deal in the wake of an Italian court's judgement in which certain initials like "AP" have been recorded.
As Congress members raised objections to Parrikar reading out his reply from a prepared text, Deputy Chairman P J Kurien ruled that a Minister has all the right to read from a prepared speech.
Swamy, who has already tilted at the windmills last week seeking to drag Sonia Gandhi into the row, refrained from naming her but made suggestive remarks on Congress leadership, repeatedly drawing protests from the opposition side.
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At another point, he said he would not name anybody and in an apparent reference to Gandhi, he just remarked "blank, blank, blank..."
The Congress fielded the then Defence Minister A K Antony, Congress President Sonia Gandhi's political secretary Ahmed Patel along with Abhishek Manu Singhvi to defend the actions of the previous UPA government, insisting that there was no wrongdoing.
All of them pressed for a thorough and urgent probe into the matter to clear the air, with Leader of Opposition Ghulam Nabi Azad wanting the investigation to be monitored by the Supreme Court and completed in three months. The government, however, rejected the demand.
He contended that it was the Vajpayee government which had taken all the "major" decisions, including with regard to the parameters of cabin height and flying altitude of the helicopters.
Patel, whose name has been dragged into the row because of the initials "AP' found on a hand-written note cited in the judgement, also sought a probe, declaring that he will quit Rajya Sabha as well as public life if any wrongdoing on his part was proved.