The New York-based Human Rights Watch said the Commonwealth Ministerial Action Group, which is scheduled to meet in New York today, "should make the Sri Lankan rights situation a priority." Amnesty International said the Commonwealth "has been shamefully silent so far about Sri Lanka's human rights crisis."
Western nations and rights groups have been pressing Sri Lanka to account for thousands of civilians who are suspected to have died in the final months of the quarter-century war that ended in 2009 when government forces crushed resistance by Tamil rebels who were fighting for an ethnic homeland.
The UN Human Rights Council has repeatedly demanded such an investigation, and Pillay said she would recommend that the council establish its own probe if Sri Lanka does not show more "credible" progress by March.
Sri Lanka has resisted calls for an international investigation of abuses such as civilian deaths during its long civil war.
Amnesty said Sri Lanka should be barred from hosting the summit because of its "disturbing human rights record." Today's meeting in New York "is an opportunity for the Commonwealth to show some real leadership on human rights," said Polly Truscott, Amnesty's Deputy Asia-Pacific Director in a statement. "The organization has been shamefully silent so far about Sri Lanka's human rights crisis - including the persistent lack of justice for past crimes and ongoing attacks on human rights defenders and other activists.