Two Sudanese rebel groups have said they will refuse to sign a proposed peace agreement unless there are fundamental changes made to the document.
The African Union had set midnight tonight as a deadline to conclude the talks in Nigeria and said it would not reopen substantial negotiations on the proposed text.
Meanwhile, in the United States several thousand Americans, led by religious leaders, entertainers and politicians, marched in a number of cities to urge the US Government to halt what they say is genocide in Sudan's Darfur region.
