In January 2016, Sudanese government forces launched a large-scale military campaign in the Jebel Marra area in Darfur, Sudan. Co-ordinated ground and air attacks targeted locations throughout Jebel Marra until May. After that, the seasonal rains in Darfur intensified, making ground attacks impractical throughout most of the area; air operations continued through mid-September. Amnesty International has documented a large number of serious violations of international humanitarian and international human rights law committed by Sudanese government forces.