Khartoum - Sudan's ambassador to the United Nations on Friday defended his nation's decision to expel 16 nongovernmental aid organizations, charging they were "messing up everything," "spoiling," and "destabilizing" his country.

Abdalmahmood Abdalhaleem Mohamad said the government took action because the North African nation has evidence the suspended nongovernmental organizations repeatedly acted outside their humanitarian mandate and were working with the International Criminal Court in its investigation into the conflict in the Darfur region of Sudan.

When asked to produce evidence of nongovernmental organization complicity with the International Criminal Court, the ambassador failed to produce verbal or visual documentation, but told members of the U.N. press corps to come to his office to see it.

On Wednesday, judges with The Hague-based International Criminal Court issued an arrest warrant for Sudan's president, Omar al-Bashir, on charges of war crimes and crimes against humanity for his role in the Darfur war.

Almost immediately after the arrest warrant was issued for its president, Sudan revoked the registrations of 13 international nongovernmental organizations and three national nongovernmental organizations, according to the U.N. Office for the Coordination of Humanitarian Affairs.