The WFP says people inside the camps have also been cut off from aid agencies. It says Sudanese forces raided two camps near Nyala, in southern Darfur, with police and soldiers surrounding the camps before dawn. The WFP says the security forces surrounded the Otash and Abu Sharif camps.
However, the Government says its soldiers were invited into the camps to protect displaced families. More than 1.5 million people have fled their homes in Sudan's Darfur region because of ongoing violence.
The European Union is warning it will impose sanctions if the Sudanese Government fails to disarm militias that have been attacking civilians. The UN refugee agency says it has been forced to cancel several missions because of continual violence in the region.
By Sally Sara 3 November 04
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