A U.S. group backed by actor George Clooney says new satellite images from a contested region of Sudan show some 300 buildings were burned to the ground during a militia attack.
The buildings were torched in a village near the town of Abyei, a contested area between north and south Sudan. Abyei is the most contentious issue between the two regions.
Southern Sudan voted overwhelmingly for independence in a January poll.
The region has since seen a wave of attacks that has killed more than 100 people and led tens of thousands to flee.
The Satellite Sentinel Project said its latest images confirm the "widespread and systematic targeting of civilian infrastructure."
Fighting elsewhere in Southern Sudan was reported to have killed more than 50 people on Sunday.