An advocacy group has said new satellite images provide evidence that northern Sudanese troops have committed war crimes, including ethnic cleansing, in the contested border town of Abyei where the forces took over more than a week ago. The Satellite Sentinel Project said in a statement that satellite images by DigitalGlobe show that the Sudanese army burned about one third of all civilian buildings in the north-south border town, used disproportionate force and indiscriminately targeted civilians.