Film star George Clooney has highlighted satellite evidence from a US-based anti-genocide group that 26 villages in Sudan were deliberately set on fire last month.
The American actor and activist said that destroying a village is a war crime and the international community must take action.
The Satellite Sentinel Project, which Clooney helped to found, said satellite imagery shows that 26 villages, food crops and grasslands were burned in a 54-square-mile area in the Nuba Mountains of Sudan last month.
Sudanese troops are fighting rebels who were once aligned with South Sudan.
When South Sudan peacefully broke away from Sudan last year, the rebels were placed in the Sudan half of the partition.