The Supreme Court on Wednesday sought the CBI's response on a plea seeking the recall of its 1999 judgement upholding the conviction of seven accused in the Rajiv Gandhi assassination case.A bench of Justice Ranjan Gogoi and Justice R. Banumathi sought the Central Bureau of Investigation's response on a plea by A.G. Perarivalan -- one of the seven convicts undergoing life imprisonment for his role in the conspiracy leading to the assassination of the former Prime Minister.Perarivalan has sought the recall of the 1999 judgement after Superintendent of Police, who investigated the case, said in an affidavit that he had not recorded Perarivalan's statement that he was not aware the purpose for which the batteries supplied by him would be used.Perarivalan was accused of supplying batteries that were used in the explisive device that killed Gandhi at Sriperumbudur on May 21, 1991.