Congress president Sonia Gandhi on Tuesday demanded an “independent and credible” inquiry into the violation of human rights in Sri Lanka even as she refused to comment on key UPA ally DMK withdrawing support to the government at the Centre.

Voicing her pain and anguish over the “denial of legitimate political rights” to Sri Lankan Tamils, Ms. Gandhi dwelt at length on the issue at the Congress Parliamentary Party meeting in Delhi.

“I have nothing to say now”, Ms. Gandhi said when asked about the pull out by DMK.

“The plight of Tamils in Sri Lanka is close to our hearts. Our support for equal rights and equal protection of the laws to them has been unwavering since the days of Indiraji and Rajivji.

“We are most pained at the manner in which their legitimate political rights continue to be denied to them. We are anguished by reports of unspeakable atrocities on innocent civilians and children, especially during the last days of the conflict in 2009,” she said.