[1] He represented the Batticaloa multi-member electoral district for the TNA in the Sri Lankan Parliament, for a short period of time between April 2004 and May 2004.
LTTE chief Velupillai Prabhakaran feared that he would become a patron to the political party registered by Karuna Amman, Tamil Makkal Viduthalai Pulikal (TMVP).
He was a close associate of senior LTTE leader Kasi Anandan by the Indian Peace Keeping Force period during 1987–90.
Because TNA salewarts like Joseph Pararajasingham and Pakkiyaselvam Ariyanethiran, failed to get selected in the election, LTTE pressurized Rasanayagam to resign though he stated it was for personal reasons.
[4][5] Around 6:20 p.m., 19 October 2004, he was shot dead by unidentified gunmen near Kalliyankaadu cemetery in Iruthayapuram within Batticaloa municipal limits.