The United Nations mission in South Sudan (UNMISS) has denied a report issued by the office of a U.N. Commissioner for Human Rights of a mass grave.

The Berlin office of Navi Pillay on Tuesday said a grave of 75 bodies was found in Bentiu, Unity State. Later the office revised that figure to 34 bodies and 75 people feared missing.

UNMISS said the report was an inflation of a “skirmish” that killed 15 people. It said it is still deeply concerned about extrajudicial killings and is investigating those reports.

Ethiopia Foreign Minister Tedros Adhanom told AP that the leaders of six East African countries will travel to South Sudan on Thursday to try to advance peace talks and end 10 days of violence.

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