UNITED NATIONS - The Sudanese government is allowing four aid organizations expelled from the country after its president was accused of war crimes to return under slightly different names, the U.N. humanitarian chief said yesterday.

Sudan ordered 13 of the largest international aid groups to leave the country in March, accusing them of cooperating and giving false testimony to the International Criminal Court, which issued a warrant for President Omar al-Bashir for war crimes.

John Holmes, the U.N. undersecretary-general for humanitarian affairs, said the four groups were Oregon-based Mercy Corps, U.S.-based CARE International, Save the Children U.S., and PADCO, a humanitarian contractor that aids in rebuilding war-ravaged areas.