COLOMBO, Sri Lanka (AP) — Human rights groups in Sri Lanka are asking the United Nations to set up an international investigation of alleged war crimes and other rights violations during the country’s civil war.

Twenty-four local rights groups signed a memorandum to the U.N. Human Rights Council on Tuesday saying they believe the government is not sincerely investigating the allegations.

(ANALYSIS: Sri Lanka under fire at Human Rights Council)

Government forces defeated separatist Tamil Tiger rebels in 2009, ending a quarter-century civil war. Both sides have been accused of war crimes and serious human rights violations.

The United States has said it will sponsor a resolution at the Human Rights Council on Sri Lanka’s lack of progress in investigating the allegations.

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