U.N. deputy spokesman Eduardo del Buey said Friday that Menkerios will also continue his current assignment as the secretary-general's special envoy for Sudan and South Sudan
. He will have the rank of undersecretary-general.
Menkerios, a longtime Eritrean diplomat who is now a South African citizen, will replace Zachary Muburi-Muita of Kenya who completes his assignment on June 30.
Del Buey said Menkerios brings to his new position extensive experience in African issues and with the United Nations, where he was an assistant secretary-general for political affairs from 2007-2010.