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 TNA attributed the assassination to paramilitaries collaborating with the army. The University Teachers for Human Rights (UTHR) reported that Nishantha Gajanayake, a former air force member and an employee of defense secretary Gotabhaya Rajapaksa (brother of President Mahinda Rajapaksa), was identified as the main organizer.