 The TNA blamed the assassination on paramilitaries working with the army.The University Teachers for Human Rights (UTHR) quoted sources as saying that the main organiser of the assassination was former air force member Nishantha Gajanayake, an employee of defence secretary Gotabhaya Rajapaksa, brother of President Mahinda Rajapaksa.The UTHR further claimed that the assassination was carried out by the Karuna Group/Tamil Makkal Viduthalai Pulikal (TMVP) with the assistance of the Eelam People's Democratic Party (EPDP) paramilitary group, military intelligence and a Buddhist monk affiliated with the Jathika Hela Urumaya.