Khartoum issued expulsion orders against two top relief officials in Darfur after the International Criminal Court charged President Omar al-Beshir with genocide over the seven-year conflict in the region.
Relief staff told AFP that the expelled officials work for the International Organization for Migration IOM, an inter-governmental agency separate from the United Nations.
An aid worker who spoke on condition of anonymity said the Khartoum authorities handed Laura Palatini and Carla Martinez a letter on Wednesday ordering them to leave the country within 72 hours.
Khartoum official confirmed the deportation orders but gave no reason for the expulsion.
The deportation letters came just two days after the ICC leveled the additional genocide charge against Bashir.