Security forces have opened fire on a student protest about rising fuel and food costs in the Sudanese city of El-Obeid in North Kordofan state.
Opposition group the Central Committee for Sudanese Doctors says dozens were also critically injured.
Following the killings in El-Obeid, protesters in other cities across Sudan joined in, condemning the latest violence.
Activists say there’s been little justice for those killed outside the capital Khartoum, where the ruling military and the opposition are negotiating a power-sharing deal.
Al Jazeera’s Hiba Morgan reports from Addis Ababa in neighbouring Ethiopia.