United Nations Secretary-General Ban Ki-Moon has expressed deep concern at the possibility of Sudan's president being indicted for war crimes committed in Darfur.
Mr Ban says such a move would have very serious consequences for peacekeeping operations in the country.
International Criminal Court prosecutor Luis Moreno-Ocampo is expected to seek the arrest of Sudanese President Omar al-Beshir on war crimes charges.
The prosecutor's office announced last week that evidence would be presented and suspects named on Monday for "crimes committed in the whole of Darfur over the last five years".
Sudan, which rejects the court's jurisdiction, has warned that the move could threaten peace efforts.
Hand of China
Meanwhile, the BBC has uncovered evidence that China is providing Sudan's government with military assistance in Darfur - contravening a UN arms embargo that requires foreign nations to stop their military assistance in that part of Sudan.
The Panorama TV programme tracked down Chinese army lorries in the Sudanese province that were exported from China to Sudan in 2005 - after the arms embargo was put in place.
The lorries came from a factory in China and were consigned to Sudan's defence ministry.
The BBC was also told that China was training fighter pilots who fly Chinese-made A5 Fantan fighter jets in Darfur.
