A five-judge Constitution bench headed by Chief Justice H L Dattu, hearing Centre's plea opposing Tamil Nadu's decision to remit the life sentences and set free seven convicts in the Rajiv Gandhi assassination case, also posed various queries on powers of Union and the state in granting remission.
Solicitor General (SG) Ranjit Kumar, appearing for the Centre, said, "Repeated filing of mercy pleas frustrate the principle of finality".
During the day-long hearing, the bench, also comprising Justices F M I Kalifulla, Pinaki Chandra Ghosh, Abhay Manohar Sapre and U U Lalit, asked as to whether a convict can approach the Governor with his mercy plea even after its rejection by the President.
The bench, which referred to the case of Yakub Memon without naming him, asked the SG to take instruction as to whether any procedure is in place to deal with the mercy pleas or there was need to make a fresh law.
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The Solicitor General, on his part, said the Governor can decide the mercy plea of death row convicts even it had been by the President provided there is a "change in circumstances".
"Do you mean to say that power once exercised stands exhausted?" the bench asked, adding, "why can't the state government can take a decision?"
The issue is as to whether the re-consideration of mercy pleas by the executive defies the legislative and constitutional scheme, the SG said.