COLOMBO, Sri Lanka (AP) — A group of Sri Lankan government supporters have protested against the visit of a United States diplomat to discuss issues of war crimes from the country’s quarter-century civil war that ended nearly five years ago.

Stephen J. Rapp, an ambassador-at-large in the Office of Global Criminal Justice, has met ethnic Tamil politicians, religious leaders and is scheduled to meet government leaders before leaving the island Saturday.

His visit comes amid intense pressure on Sri Lanka to conduct its own investigations into the alleged war crimes, especially in the final stages of the war between government soldiers and separatist Tamil Tiger rebels, or face an international inquiry.

The U.S. has carried two resolutions at the United Nations Human Rights Council urging a credible local investigation.