Opposition welcomes Raja's resignation, demands impartial probe

The ruling Congress, on the other hand, claimed a moral high ground, saying the UPA minister tendered his resignation in highest traditions of democracy and hoped that the opposition would now let Parliament to function.

DMK said it had asked the minister from the party to resign to ensure smooth functioning of Parliament so that issues of public importance were taken up.

Describing it as the "mother of all scams" and "a monumental fraud of 1.76 lakh crore", BJP chief spokesperson Ravi Shankar Prasad said Raja must be prosecuted under Prevention of Corruption Act.

"A proper FIR should be lodged, CBI is already inquring...All those involved in this big scam...should be made accountable and liable. All should be prosecuted," he said.