New Delhi, March 28: The Supreme Court on Wednesday rejected a plea seeking fresh investigation into the assassition of Mahatma Gandhi, saying it was not convinced there was any need. The bench of Justice S.A. Bobde and Justice L. geswara Rao dismissed the plea by Pankaj Kumudchandra Phadnis, who had sought re-investigation of the assassition on the basis of fresh material which, he said, was not available earlier and pointed to the involvement of an unseen hand in it.