Chennai, Nov 02 (ANI): Union Finance Minister, P Chidambaram on Saturday slammed Sri Lankan government for its unilateral stand on the issue of human rights violations, amid speculations of Prime Minister, Manmohan Singh's participation in the Commonwealth Heads Meeting in Colombo. Chidambaram met DMK chief M Karunanidhi in Chennai to discuss about Singh participating in the meeting. Chidambaram said that human rights violations should be thoroughly investigated. Earlier on October 24, the government of Tamil Nadu moved a resolution in the state assembly, demanding India to boycott the meet in Colombo as a mark of protest against the war crimes committed by Sri Lankan regime on Tamils. Moving the resolution, Chief Minister J. Jayalalithaa insisted the central government to seek suspension of Sri Lanka from CHOGM.