A Sudanese military drone strike on a busy market in Nyala killed over 100 people and injured 113 others, according to rights group Emergency Lawyers.
The attack on Monday evening hit the capital of South Darfur province, with victims including many women and children, prompting calls for an independent investigation.
Sudan's ongoing conflict has created the world's largest humanitarian crisis, leaving about 34 million people in need of assistance, according to UN figures.