A bench of justices G S Singhvi and S J Mukhopadhaya also noted that the figures "give an impression" that the Centre and the President's Secretariat "have not dealt with these petitions with requisite seriousness".
"Before parting with the judgement, we consider it necessary to take cognizance of a rather disturbing phenomena. The statistics produced by the learned Additional Solicitor General show that between 1950 and 2009, over 300 mercy petitions were filed of which 214 were accepted by the President and the sentence of death was commuted into life imprisonment.
"The particulars contained in the judgement give an impression that the Government and the President's Secretariat have not dealt with these petitions with requisite seriousness. We hope and trust that in future such petitions will be disposed of without unreasonable delay," it said.
The apex court made the observation while rejecting Khalistani terrorist Devinderpal Singh Bhullar's plea for commuting his death penalty on delay in deciding his mercy plea, saying that in view of the peculiar facts of the case "we are convinced there is no valid ground to interfere with the decision taken by the President".
"We can take judicial notice of the fact that substantial portion of the delay can well-nigh be attributed to unending spate of petitions on behalf of the petitioner by various persons," the bench said.