The United Nations' top human rights official on Wednesday faulted Sri Lanka for failing to investigate reports of widespread killings and other atrocities toward the end of its bloody quarter-century civil war.

In her report to the 47-nation U.N. Human Rights Council, High Commissioner for Human Rights Navi Pillay also said opposition leaders are still being killed or abducted and the government has made no arrests or prosecutions in cases of disappearances.