With India voting against Sri Lanka at the United Nations Human Rights Council, Bharatiya Janata Party on Thursday said the government and Dravida Munnetra Kazagham should spell out the steps they had taken to prevent attacks on ethnic Tamils during the war against Liberation Tigers of Tamil Eelam.

"When the Sri Lankan army was violent, you (government) were silent. Now, they are silent but why are you violent"? BJP leader M Venkaiah Naidu told reporters in New Delhi.

He said the government and DMK, which was part of the government when the war against LTTE was fought, should spell out why they did not take steps to ensure that unarmed Tamils were not harmed in Sri Lanka.

The government and DMK should explain their respective stand on the issue which has paralysed Parliament for a few days.

The UN Human Rights Council today adopted a US-sponsored resolution on human rights violation in Sri Lanka with 25 countries, including India, voting in favour of the document in the 47-nation strong body.

While 13 countries, including Pakistan, voted against, eight member-states abstained from voting on the contentious resolution that saw political tremors in India with DMK pulling out of the UPA alliance and the government.