The UN Secretary-General, Kofi Annan, has said Sudan is violating both international law and its agreements with the UN by forcing homeless people out of camps they had fled to in Darfur.
Mr Annan also expressed his concern at the deteriorating security situation in the Darfur region.
In recent days tension has increased in the region following the kidnapping of 18 hostages by rebels and the mobilisation of thousands of Arab militias.
Mr Annan called on all sides to stop fighting, urged the rebels to release their hostages and appealed to the militias to stand down.
