It is widely believed that the assassination was sanctioned by the Sri Lankan government/military and carried out by the government backed Karuna Group/TMVP paramilitary group. An unknown group calling itself Sennan Padai (Sennan Force) claimed responsibility for the attack and ordered other TNA MPs from the Eastern Province to resign or face execution. Sennan Padai's leaflets were distributed by the Sri Lankan military. Anti-LTTE websites such as the "Asian Tribune" gave prominence to the statements by Sennan Padai and Seerum Padai (Hissing Force) and started a campaign to vilify Pararajasingham.